TECHNICAL MANUAL
OPTIBELT V-BELT DRIVES
Quality
is the result of design fuelled by intent.
Technical Manual
for V-Belt Drives
This manual contains all the important technical information and methods required for
calculating drives using Optibelt V-belts and pulleys in industrial applications.
The following drive elements from Optibelt´s comprehensive range are described in
detail:
optibelt SK
High performance wedge belts
optibelt RED POWER II
High performance wedge belts, service free
optibelt VB
Classical V-belts
optibelt SUPER TX M=S
V-belts – raw-edge, moulded cogged –
optibelt KB
Kraftbands with high performance wedge
belts and classical V-belts
optibelt KB RED POWER II
Kraftbands with high performance wedge
belts, service free
optibelt KBX
Kraftbands – raw-edge, moulded cogged –
with high performance wedge belts and
classical V-belts
optibelt SUPER VX
Variable speed belts – raw-edge, moulded
cogged –
optibelt SUPER DVX
Variable speed belts – raw-edge, double
cogged moulded
optibelt DK
Double section V-belts
optibelt PKR
Endless V-belts and Kraftbands with patterned top surface
optibelt KK
Plastic V-belting
optibelt RR
Plastic round section belting
optibelt KS
V-grooved pulleys
optibelt RE
Variable speed pulleys
optibelt TB
Taper bushes
Our engineers from the Applications Engineering Dept. will be pleased to provide
advice free of charge on the use of these types of drives and to assist in designing to
your specific requirements.
Especially with large-scale series you should by no means renounce our service. Using
state-of-the-art programmes, CAP-drive calculation, we deliver the optimum solution.
1
Distribution Organisation North America, Asia, Australia
Canada
Optibelt (Canada) Inc.
351 Steelcase Road West Unit# 8 & 9
Markham, Ontario L3R 4H9/Canada
Tel. +1-905-477-81 14
Fax +1-905-477-08 57
China
Optibelt Shanghai Representative Office
Rong Guang Business Centre Room 1218
11, Chang Shun Road
Shanghai 200051/China
Tel. +86-21-6209 1912
Fax +86-21-6208 6906
USA
Optibelt Corporation
1120 W. National Avenue
Addison, Illinois 60 101/USA
Tel. +1-630-628-84 00
Fax +1-630-628-61 75
Singapore
Optibelt Asia Pacific Pte. Ltd.
No. 4 Loyang Way 1, # 01-02/03
Singapore 508708
Tel. +65-545-4682
Fax +65-545-4685
Australia
Optibelt Sales Office Australia
63, West Street
North Sydney NSW 2060
Australia
Tel. +61-2-9460 3493
Fax +61-2-9460 0655
A & M Belting Company Ltd.
Ballyraine Industrial Estate
Letterkenny Co. Donegal
Republic of Ireland
Tel. +353-74-2 50 66
Fax +353-74-2 50 61
Arntz Belting Company Ltd.
Pennyburn Pass
Londonderry BT 48 OAE
Northern Ireland
Tel. +44-28 71-26 12 21
Fax +44-28 71-26 33 86
Distribution Organisation Germany
North West Sales Office
Max-Planck-Straße 87
D-40699 Erkrath
Tel. +49 (0)21 04-3 30 22-23
Fax +49 (0)21 04-3 55 69
North East Sales Office
Corveyer Allee 15
D-37671 Höxter
Tel. +49 (0)52 71-6 23 03
Fax +49 (0)52 71-97 62 00
South West Sales Office
Pfauhauser Straße 43
D-73240 Wendlingen
Tel. +49 (0)70 24-71 00
Fax +49 (0)70 24-5 27 92
South East Sales Office
Äußere Sulzbacher Straße 88
D-90491 Nürnberg
Tel. +49 (0)9 11-9 59 58 06
Fax +49 (0)9 11-9 59 58 08
22
Spain
Optibelt España, S.A.
P.O. Box 1141
Rois de Corella, 12
E-08205 Sabadell
Tel. +34-3-7 20 79 60
Fax +34-3-7 11 64 90
Manufacturing and Distribution Organisation
of the Arntz Optibelt Group
Finland
Optibelt Finland Oy
P.O. Box 58
Lampputie 4
FIN-00751 Helsinki
Tel. +358-9-3-46 14 00
Fax +358-9-3-46 15 00
Norway
Optibelt Norge AS
Torvet 5
N-2000 Lillestrøm
Tel. +47-63-80 10 25
Fax +46-40-49 90 10
Sweden
Optibelt
Skandinaviska AB
Hästvägen 4
S-21235 Malmö
Tel. +46-40-59 21 20
Fax +46-40-49 90 10
Denmark
Optibelt Danmark A/S
International House
Center Boulevard
DK-2300 København S
Tel. +45-32-47 32 34
Fax +46-40-49 90 10
United Kingdom
Optibelt (UK) Ltd.
5 Bishops Court
Winwick Quay
GB-Warrington WA2 8QY
Cheshire
Tel. +44-19 25-41 33 11
Fax +44-19 25-57 37 51
Netherlands
Optibelt Nederland B.V.
P.O. Box 39
NL-2140 AA Vijfhuizen
Schipholweg 955
NL-2143 CEBoesingheliede
Tel. +31-23-5 55 16 51
Fax +31-23-5 55 18 67
Belgium
Optibelt Belgium N.V./S.A.
Cornelis Schutstraat 28
B-2100 Deurne
Tel. +32-3-3 25 22 75
Fax +32-3-3 26 09 55
France
Optibelt France S.A.
54, Rue de la Gare
F-68520 Burnhaupt-le-Haut
Tel. +33-3-89 62 75 10
Fax +33-3-84 62 75 19
Transac S.A.
28, Grande rue
F-90170 Etueffont
Tel. +33-3-84 54 64 37
Fax +33-3-84 54 68 71
Germany Head Office
Arntz Optibelt GmbH
P.O. Box 10 01 32 · D-37669 Höxter
Corveyer Allee 15 · D-37671 Höxter
Tel. +49 (0)52 71-6 21
Fax +49 (0)52 71-97 62 00
Poland
Optibelt Polska Sp. z o.o.
ul. Nieszawska 15
PL-61022 Poznan
Tel. +48-61-6 53 38 51
Fax +48-61-6 53 38 52
Optibelt GmbH
P.O. Box 10 01 32 · D-37669 Höxter
Corveyer Allee 15 · D-37671 Höxter
Tel. +49 (0)52 71-6 21
Fax +49 (0)52 71-97 62 00
Optibelt Produktions
GmbH & Co. KG
Rudolstädter Straße 23
D-07422 Bad Blankenburg
Tel. +49 (0)3 6741-48 30
Fax +49 (0)3 6741-4 21 01
Switzerland
Optibelt AG
Bodenackerstrasse 70
CH-4657 Dulliken
Tel. +41- 62-2 95 52 50
Fax +41-62-2 95 52 55
Austria
Optibelt Österreich
GmbH
Carlbergergasse 38
A-1230 Wien
Tel. +43-1-8 65 43 97
Fax +43-1-8 65 43 96
South East Europe
Optibelt Österreich GmbH
Office South East Europe
Carlbergergasse 38
A-1230 Wien
Tel. +43-1-8 65 31 00 19
Fax +43-1-8 65 31 00 27
Italy
Optibelt AG
Via Dandolo, 1
I-20025 Legnano (Mi)
Tel. +39-0331-48 10 20
Fax +39-0331-48 10 75
3
Table of Contents
Standard Range
Drive belts
Optibelt SK high performance wedge belts ....................................................... 6-7
Optibelt Red Power II high performance wedge belts ............................................ 8
Optibelt VB classical V-belts ............................................................................... 9
Optibelt Super TX V-belts – raw edge, moulded cogged ................................. 10-11
Optibelt KB Kraftbands ............................................................................... 12-13
Optibelt Super VX and Super DVX variable speed belts – raw edge,
moulded cogged / double cogged ................................................................... 14
Optibelt DK double section V-belts .................................................................... 15
Standard properties ......................................................................................... 16
Special constructions ....................................................................................... 17
Standard Range
Drive belts
Optibelt SK high performance wedge belts
Sections SPZ, SPA, SPB, SPC, 3V/9N, 5V/15N, 8V/25N ............................ 18-19
Optibelt Red Power II, Sections SPZ, SPA, SPB, SPC, 3V/9N, 5V/15N, 8V/25N 20-21
Optibelt VB classical V-belts
Sections 5, Y/6, 8, Z/10, A/13, B/17, 20, C/22, 25, D/32, E/40 ............. 22-26
Optibelt Super TX V-belts
Sections XPZ, XPA, XPB, XPC, 3VX, 5VX, ZX/X10, AX/X13, BX/X17, CX/X22 27-28
Optibelt-KB Kraftbands, Sections SPZ, SPA, SPB, SPC, 3V/9J, 5V/15J, 8V/25J,
3VX, 5VX, A/HA, B/HB, C/HC, D/HD ........................................................ 29-32
Optibelt Red Power II Kraftbands, Sections SPZ, SPA, SPB, SPC,
3V/9J, 5V/15J, 8V/25J ............................................................................. 33-34
Optibelt Super VX variable speed belts ......................................................... 35-36
Optibelt DK double section V-belts, Sections AA/HAA, BB/HBB, CC/HCC,
DD/HDD, 22 x 22, 25 x 22 ............................................................................ 37
Standard Range
Metal
Optibelt KS V-grooved pulleys, Optibelt TB taper bushes ..................................... 38
Standard Range
Metal
Optibelt V-grooved pulleys for wedge belts and classical V-belts ..................... 41-42
Optibelt KS V-grooved pulleys, types ................................................................. 39
Optibelt pulleys - standards - design criteria - types ............................................. 40
Optibelt V-grooved pulleys US Standard for wedge belts ..................................... 43
Optibelt V-pulleys for Kraftbands .................................................................. 44-45
Optibelt Deep grooved pulleys ......................................................................... 46
Optibelt KS V-grooved pulleys for taper bushes ............................................. 47-55
Optibelt KS V-grooved pulleys for cylindrical bore ......................................... 56-61
Optibelt RE Variable speed pulleys .............................................................. 62-64
Optibelt TB Taper bushes ................................................................................. 65
4
Table of Contents
Drive calculations
Design calculation ...................................................................................... 66-77
Formulae and calculation examples ............................................................. 78-80
Drive calculation with Optibelt CAP .................................................................. 81
Power ratings
Optibelt SK ................................................................................................ 82-86
Optibelt Red Power II .................................................................................. 87-91
Optibelt Super TX ....................................................................................... 92-99
Optibelt VB ............................................................................................ 100-110
Special drives
V-flat drives ............................................................................................ 111-113
Tension / guide pulleys ........................................................................... 114-116
Twisted drives ........................................................................................ 117-119
Special drives with aramid tension cord ................................................... 120-121
Design hints
Belt tension for Optibelt V-belts and Kraftbands ......................................... 122-126
Calculating the axial force ............................................................................. 127
Tension gauges & Tension tester ..................................................................... 128
Tensioning for Optibelt V-belts ........................................................................ 129
Installation and maintenance aids ............................................................ 130-131
V-grooved pulleys with taper bushes ................................................................ 132
Storage ........................................................................................................ 133
Physical properties ................................................................................. 134-137
Problems – causes – remedies .................................................................. 138-139
Length measurement conditions and conversion factors .............................. 140-142
Length tolerances .................................................................................... 143-144
Conversion factors .................................................................................. 145-146
Special purpose
conveyor belts
Product description ........................................................................................ 147
Design guidelines and Optibelt KB Kraftbands with patterned top surfaces .......... 148
Optibelt PKR endless V-belts with patterned top surfaces .................................... 149
Optibelt PKR open ended V-belting with patterned top surfaces .......................... 150
Optibelt RR and Optibelt KK ........................................................................... 151
Annex
Table of standards .................................................................................. 152-153
Data sheet for calculating / checking drives .............................................. 154-155
Data sheet for calculating / checking conveyor systems ............................. 156-157
5
Standard Range
optibelt SK Wedge Belts to BS 3790/DIN 7753 Part 1
Construction
Applications
Optibelt SK wedge belts consist of
Optibelt SK wedge belts with the sections SPZ, SPA, SPB and SPC
were specially developed for all industrial applications from lightly
loaded drives, such as those for pumps, to heavily loaded stone
crusher drives.
Filler rubber
Tension cord
Standards
Rubber core
Optibelt SK wedge belts SPZ, SPA, SPB and SPC conform to BS
3790, DIN 7753 Part 1 and ISO 4184.
Fabric cover
British, German and ISO standards specify the datum width as a
basis for the standardisation of V-belts and grooves. This is the
width of a V-belt that remains unchanged when the belt is bent
perpendicular to the base of its cross section. The datum length Ld
of the belt is the length measured at the position of the datum width
and is the basis of standardisation.
The base and filler rubbers are extruded to precise profile dimensions and weight per unit length to give a better fit in the pulley
grooves and vibration free running.
Polyester tension cord is standard, with yarn constructions matched
to section. The cord is specially impregnated and then encapsulated in a special rubber compound to give a perfect bond to the base
and filler rubber. In addition the cord is pre-stretched prior to
building into the belt to give lower stretch characteristics on the
drive. As a result, we were able to reduce significantly our
recommended minimum allowances for drive centre adjustment,
compared to those specified in BS/DIN/ISO.
Optibelt offer a more comprehensive range of belt sections and
lengths than those included in any individual standard.
The fabric cover is treated with a wear resistant rubber compound.
This renders the belt resistant to oil, heat and cold and to the effects
of dust.
Properties
Optibelt SK wedge belts are the result of intensive product and
material development. The use of the best materials and the most
advanced production methods, backed up by the most modern
static and dynamic test equipment ensures that the finished product
is a most efficient method of transmitting power
Table 1
Optibelt SK wedge belts differ from classical V-belts as follows:
● Considerable reduction in cross sectional area for similar power
transmission capability (belt width to height ratio approx.
1:1.2). This allows substantial savings in pulley face widths and
therefore costs.
Section
Belt top width
bo
● Lower comparative belt weight per unit length and consequently
lower centrifugal force permits belt speeds of up to 42 m/sec.
Datum width
bd
● Greater flexibility permits higher flexing rates (fB max = 100 per
sec.).
Belt heigth
h
Distance down to datum line
hd
Recommended minimum
pulley datum diameter
dd min
● Greater surface area relative to belt section ensures better heat
dissipation.
● Less deformation of the belt cross section when in contact with
the pulley therefore better contact between the belt edges and
the pulley grooves.
All these properties result in a performance significantly higher
than that of classical V-belts with approximately the same top
widths. Therefore Optibelt SK wedge belts should be used on all
new drive designs.
6
SPZ
SPA
SPB
SPC
9.7
12.7
16.3
22
8,5
11
14
19
≈
8
10
13
18
≈
2
2,8
3,5
4,8
63
90
140
224
0.074
0.123
0.195
0.377
≈
≈
Belt weight (kg/m)
-1
Max. flexing rate (s )
fB max
≈
100
Max. belt speed (m/s)
vmax
≈
42
Standard Range
optibelt SK Wedge Belts to USA Standard RMA/MPTA
Construction/Properties
Table 2
Optibelt SK wedge belts to USA Standard RMA/MPTA have the
same construction and properties as wedge belts to BS 3790 and
DIN 7753 Part 1.
Section
3V/9N
5V/15N 8V/25N
Belt top width
bo
≈
9
15
25
Filler rubber
Belt heigth
h
≈
8
13
23
Tension cord
Recommended minimum
pulley datum diameter
da min
63
140
335
0.074
0.195
0.575
Base rubber
Rubber impregnated
cover fabric
Belt weight (kg/m)
≈
Max. flexing rate per sec.
fB max ≈
100
Max. belt speed (m/s)
vmax ≈
42
Standardisation/Dimensions
The belt length designation refers to the effective outside length.
The three wedge belt sections standardised in the USA are 3V/9N,
5V/15N and 8V/25N. The cross section dimensions of these belts
and the lengths by which they are identified are not in accordance
with BS 3790 or DIN 7753.
Example:
The section 3V/9N roughly corresponds to SPZ; and 5V/15N to
the section SPB. There is no comparable BS/DIN/ISO wedge belt
section for 8V/25N. It is possible to use belts of 3V/9N and 5V/
15N section in SPZ-Z/10 or SPB-B/17 pulleys, respectively; but the
use of SPZ or SPB belts in RMA/MPTA standard pulleys is not
normally recommended. The top width of the American pulley
grooves are narrower than those of the corresponding BS/DIN/
ISO pulleys. This can cause wear on the upper edges of SPZ and
SPB section belts and can lead to premature failure.
Optibelt SK wedge belts in SPB section have been so
designed that they are also suitable for use with 5V/
15N pulleys.
Inch designation
Metric designation
3V 750
9N 1905
3V = belt top width (3/8")
9
= belt top width
(9 mm)
N
= designation for
single V-belt
750 = outside length
in inches x 10
750 · 25.4
10
La =
La
1905 = effective outside
length in mm
(1 inch = 25.4 mm)
= 1905 mm
Applications
The use of Optibelt SK wedge belt drives in sections 3V/9N and
5V/15N is recommended for machines exported to countries such
as the USA and Canada where these belt sections are standardised
and used predominantly.
Section 8V/25N is primarily employed in very heavy duty drives
such as mills or stone crushers. As these wedge belts transmit very
high levels of power, they can sometimes form a more compact
drive than the SPC section.
da
For this reason, the 8V/25N section has continued to be used in
Europe for such applications. A further advantage is the fact that
single wedge belts can be replaced by Kraftbands, without
changing the pulley geometry, should unexpected belt vibration
problems develop.
Drive Calculation
Drive calculations follow procedures described in this manual.
Power ratings for 3V/9N and 5V/15N sections are the same as
those for SPZ and SPB sections respectively but, for 3V/9N and
5V/15N the pulley outside diameter is the basis for calculation, not
the pitch or datum diameter. Slight differences in the theoretical
drive speed and the speed ratio are not significant in practice.
7
Standard Range
optibelt RED POWER II High Performance Wedge Belts
Construction
others compressors, pumps, presses, fans and other heavy duty
drives.
Optibelt Red Power II wedge belts.
Transverse fibre mixture
made of polychloroprene
Polyester tension cord/
service free
Standardisation / Dimensions
Optibelt Red Power II wedge belts with the sections SPZ, SPA, SPB,
SPC, 3V/9N, 5V/25N are standardised according to DIN 7753
Part 1, ISO 4184 and RMA/MPTA.
Transverse fibre mixture
made of polychloroprene
Rubber core
Abrasion resistant cover
fabric
The tension cord for all sections and cross sections consists of a
special polyester cord. Due to the special treatment of the tension
cord the Optibelt Red Power II wedge belt is very low stretch and
service free, so that retensioning is not necessary.
The fibre mixture over and under the tension cord guarantees
highly dynamic load of the belt and provides good flexibility in
combination with the polyester tension cord.
The cover fabric is extremely wear resistant, flexible and abrasion
proof.
Section
Properties
Belt top width
bo
Datum width
bd
Belt heigth
h
Application with drives using idler pulleys is possible due to the
special set-up of the Optibelt Red Power II.
Distance down to
datum line
hd
Its properties:
Recommended minimum
pulley datum diameter
dd min
The high-quality components in connection with product manufacturing make the Optibelt Red Power II a service free V-belt.
Production is continuously monitored using state-of-the-art static
and dynamic testing devices.
●
●
●
●
●
service free
strong power rating
favourable cost
SetConstant
environmentally friendly
SPZ
SPA
SPB
SPC
9.7
12.7
16.3
22
8.5
11
14
19
≈
8
10
13
18
≈
2
2,8
3,5
4,8
63
90
140
224
0.074
0.123
0.195
0.377
≈
≈
Belt weight (kg/m)
Maximum flex
rate (per sec.)
fB max
≈
100
Maximum belt speed (m/s)
vmax
≈
42
Optibelt Red Power II are oil-resistant, heat-resistant and dust
protected as standard.
Using the electrically conductive Optibelt Red Power II requires
testing the stipulated properties according to ISO 1813. With our
acceptance test certificate according to EN 10204 “3.1.B” we
prove its anti-static properties.
Belt top width
bo
≈
9
15
25
V-belt tensioning
Datum width
h
≈
8
13
23
For the initial fitting of Optibelt Red Power II the same calculation
methods are used as for standard Optibelt V-belts. The tensioning
values are to be calculated on the same basis or to be taken from
the table on page 129. Once correctly tensioned Optibelt Red
Power II V-belts need no retensioning.
Recommended minimum
pulley datum diameter
da min
63
140
335
0.195
0.575
Applications
Optibelt Red Power II wedge belts were especially developed for
mechanical engineering. The fields of application are among
8
Section
Belt weight (kg/m)
3V/9N
≈ 0.074
5V/15N 8V/25N
Maximum flex rate (per sec.) fB max ≈
100
Maximum belt speed (m/s) vmax ≈
42
Standard Range
optibelt VB Classical V-Belts to BS 3790 and DIN 2215
Construction/Properties
Optibelt VB classical V-belts are manufactured using the same
production processes as those for Optibelt SK wedge belts.
possible within this Manual to describe all of the special constructions or the calculation data applicable to them. It is therefore
requested that all details of such drives are forwarded to our
Applications Engineering Department for calculation and recommendation.
Standardisation/Dimensions
Filler rubber
The Optibelt range also includes sections 5, 8, 20 and 25 from an
earlier edition of DIN 2215. These sections should, where possible, be avoided on replacement and rationalisation grounds.
Tension cord
Base rubber
Rubber impregnated
cover fabric
The components used are perfectly suited to the power ratings PN
shown in later tables. These values are significantly higher than
those quoted in BS 3790 or DIN 2218 and therefore offer a greater
factor of safety on critical drives.
The British and ISO Standards specify the datum length
for measuring and identifying the belt length. The
datum length is the circumferential length of the belt
measured at a datum width lp. The earlier DIN standard length designation using the inside length Li is
replaced by the datum length Ld. For the conversion
factors from pitch to inside length, please see page
141.
● Optibelt VB classical V-belts have a belt width to belt height ratio
of approx. 1:1.6.
● The maximum belt speed vmax = 30 m/s should not be exceeded.
● The permissible flex rate is considerably lower that that for
wedge belts, at fB max = 80 per second.
Applications
Optibelt VB classical V-belts are employed primarily as replacements on industrial drives. For new drives, it is almost always
recommended that wedge belts be specified for reasons of space
and cost. However, special drives, such as V-flat, often can only use
classical V-belts. Similarly, difficult drives for agricultural and
horticultural machinery are often unsuitable for wedge belts by
virtue of the use of small pulleys or back bend idlers.For these
applications special belt constructions may be necessary. It is not
Table 3
Section
DIN 2215
(5)
6
(8)
10
13
17
(20)
22
(25)
32
40
BS 3790/ISO 4184
–
Y
–
Z
A
B
–
C
–
D
E
≈
5
6
8
10
13
17
20
22
25
32
40
4.2
5.3
6.7
8.5
11
14
17
19
21
27
32
Belt top width
bo
Datum width
bd
Belt heigth
h
≈
3
4
5
6
8
11
12,5
14
16
20
25
Distance down to datum line
hd
≈
1.3
1.6
2.0
2.5
3.3
4.2
4.8
5.7
6.3
8.1
12
Recommended minimum
pulley datum diameter
dd min
20
28
40
50
71
112
160
180
250
355
500
≈ 0.018 0.026 0.042 0.064 0.109 0.190 0.266 0.324 0.420 0.690 0.958
Belt weight (kg/m)
Max. flexing rate (per sec.)
fB max ≈
80
Max. belt speed (m/s)
vmax
≈
30
9
Standard Range
optibelt SUPER TX M=S V-Belts – raw edge, moulded cogged –
BS/DIN/ISO, RMA/MPTA
The advantages of the Optibelt Super TX M=S V-belts are evident
where –
● extremely small pulley diameters
The moulded cogs reduce bending stress and give outstanding
flexibility. As a result, significantly smaller pulleys than those used
with conventional fabric wrapped V-belts can be employed.
● high belt speeds
● extraordinary power transmission requirements
● high ambient temperatures
render the use of wrapped V-belts uneconomical and impractical.
Optibelt Super TX M=S V-belts sections XPZ, XPA, XPB, XPC, 3VX/
9NX, 5VX/15NX, ZX/X10, AX/X13, BX/X17 and CX/X22 offer
the best technical and economic solutions for these conditions
through their use of high grade components coupled to the most
advanced production machinery.
Construction/Properties
Optibelt Super TX M=S belts consist of
Fabric
Tension cord
Bedding compound
Fibre reinforced base
compound
Moulded cog
The base compound consists of a polychloroprene rubber mixture
filled with fibres arranged to lie across the belt section. These
provide an effective support to the tension cord.
The result is
● very high flexibility
● high transverse stiffness
● considerably increased abrasion/wear resistance and
● insensitivity to slip
The use of a new type of polyester cord, specially developed
Optibelt Super TX M=S V-belts imparts
● remarkably low stretch properties
to the belt.
This specially designed tension cord is securely locked into the
bedding compound. Perfect adhesion between the components is
ensured even under the highest dynamic loading conditions.
The fabric layers at the top of the belt support the tension cord and
contribute to the
● greater belt flexibility.
The fibre reinforced base compound, in conjunction with the
Optibelt tension cord and the moulded cog, offers increased and
more efficient transmission of power.
10
With Optibelt Super TX M=S V-belts drive ratios (I) of up to 12 to
1 are possible.
Multi-stage drives can be eliminated.
Standard Range
optibelt SUPER TX M=S V-Belts – raw edge, moulded cogged –
BS/DIN/ISO, RMA/MPTA
Optibelt Super TX M=S V-belts are more heat and oil resistant than
wrapped V-belts as new, high quality rubber compounds are used.
Weight and space requirements are reduced by their ability to
transmit higher power even with small diameter pulleys often
resulting in a
● significant reduction in cost.
Standardisation/Dimensions
The cross sections and dimensions of Optibelt Super TX M=S Vbelts correspond to BS 3790:1981, DIN 7753 Part 1, DIN 2215,
ISO 4184 and RMA/MPTA.
The basis for the length measurement is the datum length (Ld) to BS/
DIN/ISO.
Power Comparison
Nominal power per belt PN (kW)
Pulley datum diameter dd = 140 mm
Ratio i = 1:1
optibelt Super TX M=S
Section XPA
Table 4
Section
Wrapped belt
section SPA
Drive Calculation
Drive designs using Optibelt Super TX M=S belts should be
undertaken following the example given on pages 59 to 61. The
higher power ratings given in the relevant tables, apply. These are
based on a theoretical laboratory running time of 25,000 hours.
The precision ground sides of the Optibelt Super TX M=S V-belts
ensure uniform seating in the pulley grooves, resulting in smoother
running.
Belt
height
Distance
down to
datum line
bo ≈
bd
h≈
hd ≈
8.5
8
Belt
weight
(kg/m) ≈
9.7
2
0.065
XPA
12.7
11
10
2.8
0.105
XPB
16.3
14
13
3.5
0.183
XPC
22
19
18
4.8
0.340
9
—
8
—
0.065
5VX/15NX
15
—
13
—
0.183
ZX/X10
10
8.5
2.5
0.062
AX/X13
13
11
8
3.3
0.099
BX/X17
17
14
11
4.2
0.165
CX/X22
22
19
14
5.7
0.276
6
Pulleys
Optibelt Super TX M=S V-belts are used with pulleys to BS 3790,
DIN 2211, DIN 2217, ISO 4183 and RMA/MPTA. Considerably
smaller minimum pulley datum diameters are acceptable.
Table 5
Recommend minimum pulley datum diameter (mm)
Belt Tension/Static Shaft Loading
Belt tension and static shaft loading are calculated as for wrapped
belts. The shaft loading is usually no greater than that for the same
drive using wrapped belts. It is often possible, due to a reduction
in the number of belts used, that the shaft loading could be lower.
The individual Super TX belt requires a higher tension than the
wrapped belt in order to utilise its greater power transmission
capability.
Datum
with
XPZ
3VX/9NX
Speed n (min-1)
Belt
top
width
Section
XPZ
raw edge,
moulded cogged
Section
wrapped
56
SPZ
XPA
71
SPA
90
XPB
112
SPB
140
XPC
180
SPC
224
3VX/9NX
5VX/15NX
56
112
3V/9N
5V/15N
63
63
140
ZX/X10
40
Z/10
Applications
50
AX/X13
63
A/13
71
The use of Optibelt Super TX M=S belts in borderline cases is
recommended wherever difficulties are anticipated with wrapped
V-belts.
BX/X17
90
B/17
112
CX/X22
140
C/22
180
11
Standard Range
optibelt KB Kraftbands
Construction
The Optibelt KB Kraftbands are made up of individual V-belts
rigidly connected by a cover plate. This compact drive element with
single-belt-characteristics is also known as a joined V-belt. According to application Kraftbands are fitted with two, three, four or five
ribs. It is also possible to provide the cover plate with specially
patterned surfaces.
Raw edge, moulded cogged Optibelt KBX Kraftbands with the belt
sections 3VX/9JX, 5VX/15JX, XPZ, XPA, AX/HAX, BX/HBX are
available upon request in lengths from 1250 to 3550 mm.
Optibelt KB
In mechanical engineering Kraftbands are successfully used for
example in screen vibrators, saw mills, stone crushers, road
construction machinery, pulpers, compressors, fans, lathes, grinding and milling machines.
In agricultural machinery Optibelt KB Kraftbands are also used as
coupling belts. Due to the single belt characteristics is is possible
to achieve smooth engagement.
For conveying, Optibelt KB Kraftbands can be supplied with
special top surfaces.
With these patterned top surfaces they are especially suitable for
transporting containers and heavy material, for example for
loading aircraft. See also the chapter on conveyor belts.
PKR 0
Optibelt KBX
PKR 3
Applications
Optibelt KB Kraftbands are predominantly employed for solving
problems associated with:
● pulsating run
● large centre distances in combination with small pulley diameters (long span lengths)
Kraftbands must be protected from direct contact with undesired
material such as stones, grit, wood shavings etc. In such operating
conditions the drive has to be protected by protective grid or similar
devices.
● vertical shafts
● reversing drives
● V-flat drives
● coupling drives
● conveyor systems (materials handling technology)
12
Standardisation – Optibelt KB Kraftband
Optibelt-KB Kraftbands with high-performance wedge belts are
manufactured according to international practice using sections
3V/9J, 5V/15J, 8V/25J. They comply with the standard ISO
8419 lengths in the reference system. The pulleys are standardised
to ISO 5290. 8419 lengths. The pulleys are standardised to ISO
5290.
Standard Range
optibelt KB Kraftbands
The ISO Committee TC 41/SC1 has used the American Standard
RMA/MPTA as the basis for this international standard. The
sections 3V, 5V, and 8V have been designated 9J, 15J and 25J
respectively.
Example: 9J
9 = approx. 9 mm nominal top width of pulley
groove
J = joined
Kraftband sets must be used for drives with more than 5 ribs. The
following combinations should be used.
Table 6
No. of ribs
Kraftband combination
2
3
4
5
6
7
7
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
2
3
4
5
3/3
3/4
4/4
5/4
5/5
4/3/4
4/4/4
4/5/4
5/4/5
5/5/5
4/4/4/4
4/4/5/4
5/4/4/5
5/4/5/5
5/5/5/5
4/4/5/4/4
5/4/4/4/5
5/4/5/4/5
5/5/4/5/5
5/5/5/5/5
5/4/4/4/4/5
5/5/4/4/4/5
5/5/4/4/5/5
5/5/5/4/5/5
5/5/5/5/5/5
5/4/4/5/4/4/5
5/5/4/4/4/5/5
5/5/5/4/4/5/5
5/5/5/4/5/5/5
5/5/5/5/5/5/5
5/5/4/4/4/4/5/5
5/5/5/4/4/4/5/5
5/5/5/4/4/5/5/5
5/5/5/5/4/5/5/5
5/5/5/5/5/5/5/5
Standardisation – Classical V-Belts
In the course of international and national standardisation,
Optibelt-KB Kraftbands using classical V-belts have been brought
into line with the USA Standard RMA/MPTA (A,B,C,D)and the USA
Standard ASAE S 211. ...(HA, HB, HC, HD). The RMA/MPTA
standard applies for the use of Kraftbands in mechanical engineering; the agricultural machinery standard ASAE S 211. ...applies
when using Kraftbands in agricultural machinery. Despite the
different section designation, the belt cross sections are identical
in both standards.
The pulleys are standardised according to ISO 5291.
Optibelt-KB Kraftband SPZ, SPA, SPB and SPC
Optibelt KB Kraftbands are employed for extreme shock loads,
large centre distances in combination with comparatively small
pulley diameters and vertical drives. They are used for coupling
drives and for conveying works. With the same power transmission, the Kraftband offers better running properties and/or safety.
Optibelt Kraftbands with sections SPZ, SPA and SPC can be
applied in standard V-grooved pulleys according to DIN 2211 and
ISO 4183.
Drive Calculation
Drives using Optibelt-KB Kraftbands in mechanical engineering
are to be fitted as shown in the calculation examples on pages 78
to 80 of this manual using the power ratings of the relevant belt
sections. In ISO 5290, the nominal top width of the pulley groove
is specified as the base value. The position of the datum diameter
is given as an approximate value. For the geometric and power
calculation, the outside diameter is used. Small computational
differences in rotational frequency and speed ratio have no
practical effect.
For Kraftbands with classical V-belts, as a rule, the calculation uses
the datum diameter as well. The power ratings correspond to the
sections of the classical V-belts.
For conversion factors for Optibelt-KB Kraftbands, see page 142.
Drives on agricultural machinery employ special design calculations and methods. We, therefore, request
that you send us your technical details.
Ordering Example
The drive of a mill is equipped with Optibelt KB Kraftbands, size
5V 1600/15J 4064 mm La. It was calculated with 18 ribs. In total,
4 Kraftbands are required - 2 belts each with 4 ribs and 2 belts each
with 5 ribs (see Table 6).
The order wording would then read:
1 set comprising 2 Optibelt KB Kraftbands 4-5V 1600/15J
4064 mm La and 2 Optibelt KB Kraftbands 5-5V 1600/15J
4064 mm La.
4 or 5
5V/15J
1600
4064
=
=
=
=
number of ribs
section
outside length in inches: 10
outside length in mm
13
Standard Range
optibelt SUPER VX and SUPER DVX Variable Speed Belts –
raw edge – moulded cogged – DIN 7719/ISO 1604
Optibelt Super VX Variable Speed Belts –
raw edge – moulded cogged –
Optibelt Super DVX Variable Speed Belts –
raw edge – moulded double cogged –
Rising demands made on the variable speed belt by the continuous
increase in transmitted power led to the development of the raw
edge, moulded cogged, variable speed belt.
Further increases in demand on the performance of drive elements
and the trend towards designing ever smaller, space saving drive
units, led to the development of the double cogged, raw edge
Optibelt Super DVX variable speed belt.
The base compound consists of a chloroprene and rubber mixture
filled with transversely oriented fibres. The high grade and exceptionally low stretch polyester or Aramid tension cord is embedded
in a rubber cushioning compound. It is effectively supported by the
reinforced base compound and by layers of compound impregnated fabric around the outside of the section. For exceptionally
difficult drives layers of special cross cord material can be used
between the base and cushion compounds.
The special properties of the raw edge, moulded cogged, variable
speed belt are:
●
●
●
●
●
●
high power transmission capability
excellent flexibility in the direction of travel
extreme transverse rigidity
especially smooth running
superior resistance to abrasion and slip
long service life
Sections
Belt widths of
13 - 100 mm
Belt thicknesses of 5 - 25 mm
Double cogged Optibelt variable speed belts make it possible to
employ the smallest diameter pulleys, even below Standard recommendations. The double cogged design improves heat dissipation
thereby significantly reducing the belt running temperature. The
production method and the structure of the belt have been derived
from the raw edge Super VX variable speed belt. Depending upon
the application, this belt can also be equipped with layers of
special cross cord material in the base compound. The belt is
double cogged, with the depth and spacing of the cogs matched
to the specific belt section. The polyester or Aramid tension cord
ensures ideal power transmission, increased service life, and
extremely low stretch characteristics.
The features of the Super DVX variable speed belt can be
summarised as follows:
●
●
●
●
●
●
acceptance of extremely high axial forces
high flexibility and low flex fatigue
improved heat dissipation
use with the smallest pulley diameters
extremely smooth running at high belt speeds
long service life
Dimensions
Lengths ranging from 500 to 5000 mm
Sections
Standardised dimensions to DIN/ISO and USA Standard RMA/
MPTA
Belt widths of
20 - 85 mm
Belt thicknesses of 10 - 30 mm
Applications
industrial machinery
variable speed drives
printing machinery
gearboxes
agricultural machinery
textile machinery
machine tools
automotive technology
special drives
compactors
multi-colour offset drives
variable diameter pulley sets
thresher drum drives
winding machinery
lathes
snowmobile drives
Dimensions
Lengths ranging from 600 to 3500 mm
Sections and dimensions comparable to DIN/ISO
Optibelt VS Variable Speed Belts – wrapped
The first generation variable speed belt was the Optibelt VS. In its design, the Optibelt VS is similar to the wrapped, classical V-belt
or wedge belt.
This belt construction is still available.
Sections and dimensions: upon request
14
Standard Range
optibelt DK Double Section V-Belts
Construction
A cross through the Optibelt DK double section V-belt reveals a
hexagon made up of two congruent trapeziums. The neutral axis
containing the tension cord is exactly half way up the.
Optibelt DK double section V-belts comprise:
These are thes HAA, HBB, HCC and HDD, that equate to the USA
Standard ASAE S 211. ..., thereby ensuring an international
interchange facility.
The effective/nominal length of the Optibelt DK double section
V-belt is measured on the effective/outside diameter of the measured pulley. This length equates roughly to length of the belt at its
widest part, the middle length.
Conversion factors are as follows:
Section
Section
Section
Section
Base rubber
Tension cord
AA/HAA
BB/HBB
CC/HCC
DD/HDD
effective
effective
effective
effective
length
length
length
length
=
=
=
=
middle
middle
middle
middle
length – 4 mm
length – 8 mm
length + 3 mm
length !
Base rubber
Experience has shown that, in practical use/ordering, these
conversion factors can be ignored.
Rubber impregnated
cover fabric
Grooved Pulleys
No special pulleys are required for Optibelt DK double section
V-belts. Pulleys conforming to ISO 4183, BS 3790,DIN 2211,
DIN 2217 and ASAE S 211. ... are suitable.
Properties/Applications
The polyester tension cord positioned at the centre of the imparts
extreme flexibility and low stretch properties to the Optibelt DK
double section V-belt. The belt is therefore particularly suited for
flexing in different directions in the same plane. Optibelt DK double
section V-belts are used where several pulleys are arranged in one
plane and the direction of rotation of one or more of the driven
pulleys must be changed without crossing the belts. Because of the
positioning of the tension cord in the neutral axis and the special
shape of the double section V-belt, the tension cord is not subjected
to any force other than tension unlike standard V-belts bent around
an outside idler. The Optibelt DK double section V-belt comes into
its own on typical serpentine arrangements. Special constructions
are also possible. In the main, double section V-belts are used on
agricultural machinery. They are, however, also finding increasing
use in industrial machinery applications.
Section
Section
Section
Section
AA/HAA
BB/HBB
CC/HCC
DD/HDD
in
in
in
in
grooved
grooved
grooved
grooved
pulleys
pulleys
pulleys
pulleys
for
for
for
for
A/13-SPA
B/17-SPB
C/22-SPC
D/32
Special Sections
For special applications, we also supply double section V-belts
withs 22 x 22 and 25 x 22. These are not standardised.
Drive Calculation
Drive calculations for Optibelt DK double section V-belts differ from
those given in this manual for two pulley drives. Multi pulley
calculations are so complicated that they cannot be shown here.
Standardisation
Effective lengths, rotational speeds, transmission ratios and belt
speeds are determined by the effective/outside pulley diameters.
The cross dimensions of the Optibelt DK double section V-belts
correspond to DIN 7722 and ISO 5289.
Our engineers will be pleased to assist in the design of drives using
Optibelt DK double section V-belts.
Table 7
DIN/ISO section
Section
Abreviated
designation
HAA
HBB
HCC
HDD
AA
BB
CC
DD
–
–
22 x 22 25 x 22
Belt width
b≈
13
17
22
32
22
25
Belt height
h≈
10
13
17
25
22
22
80
125
224
355
280
280
0.250
0.440
0.935
0.511
0.625
Recommended minimum
pulley datum diameter
Belt weight (kg/m)
Max. belt speed (m/s)
da min
≈ 0.150
vmax. ≈
30
15
Standard Properties
According to the respective requirements, all Optibelt
V-belts are manufactured using carefully selected basic
materials and continuously updated technical procedures.
Regular routine checks during production, sophisticated lab tests and careful testing of the raw materials
used guarantee a uniformly high level of quality that
can be expected from every Optibelt drive element.
Reliability and long service life are considered the most
important criteria.
S=C plus ”SetConstant”.
This stands for wrapped V-belts that can be
used in a set without measuring.
The advantages are the following:
Saves energy, high efficiency of approximately 97 % more
level transmission of performance
disposes of the well-known narrow S=C plus tolerances:
always by the nominal measure
extremely low stretch
Oil Resistant
Oil resistance prevents damaging through
mineral oils and mineral fats, insofar as
those substances are not continuously and
in great quantities in contact with the Vbelts. Animal and vegetable fats as well as water-soluble cooling
and cutting oils result in any case in a reduction of the service life.
For higher concentrations, we recommend the use of our special
constructions “05“ and Super TX V-belts respectively.
longer service life
Set code numbers are not required
reduces vibrations
requires only little adjustment
reduces self-heating, thus ageing-resistant
longer maintenance intervals
Example for S=C plus length tolerances for a high-performance
wedge belt with 5000 mm datum length.
Heat Resistant
S=C plus
Standard V-Belts allow ambient temperatures of up to approximately + 70°C. Higher temperatures lead to a premature
ageing and hardening of the V-belts. Therefore, we recommend in such cases the use of our special
construction XHR. For details see page 17.
Dust protection
Dust reduces the service life of V-belts
enormously. Wear-resistant fabric covers
make Optibel V-belts resistant to dust. This
is demonstrated by its continual application in cement factories,
mills, in the stone processing industries, and in the mining industry.
M=S Matched Sets
This stands for raw-edge moulded cogged
V-belts that can be used in a set without
measuring.
Due to specific manufacturing techniques, extremely narrow length
tolerances can be achieved so that V-belts of a nominal length can
be optionally combined. A precise edging results in a smooth
running operation. The even power transmission of all V-belts
ensures a high efficiency and thus helps save energy. Set code
numbers are not necessary, there is no set bundling. As a
consequence, storage and costs can be reduced.
16
The dimension (A) is the tolerance permitted according to DIN of
an individual V-belt with a length of 5000 mm. If you want to
assemble sets for multi-groove drives, the individual elements may
not show deviations of more than 6 mm (B) among each other.
The tolerance of the Optibelt S=C plus V-belt is considerably lower
than the set tolerance permitted according to the standard.
S=C plus V-belts are always near the nominal length.
Special Constructions
Anti-Static
Optibelt V-belts do have anti-static properties. In the case of V-belts
with inadequate antistatic properties, the electrostatic charge can
be so high that there is a risk of ignition due to sparking. The use
of anti-static belts requires a check of the required properties in
accordance with ISO 1813. We present proof of the anti-static
properties of the belts in the form of our final inspection certificate
according to EN 10204 ”3.1.B”.
We charge an extra fee for this additional service. We strongly
recommend your to order anti-static belts always separately.
Smooth Running Selected V-belts,
Special Construction LR
Drives that have to fulfil high requirements with regard to smooth
running - that is with variations of shaft centre distances - like for
example lathes and grinders, and are supposed to guarantee a
vibration free operation, may be equipped with Optibelt V-belts
“selected smooth running”. Shaft centre distance fluctuations are
measured electronically on test machines. The measurements
comply with the Optibelt Works Standards or the conditions
agreed with our customers.
Mining Industry
Extra Heat Resistant V-Belts,
Special Construction XHR
The servicelife of standard Optibelt V-belts can be greatly reduced
due to the effects of temperature.
In case of ambient temperatures that vary constantly between
approx. + 70 °C up to approx. + 90 °C, we recommend our special
construction XHR. Special rubber compounds largely prevent
premature ageing and brittleness. In borderline cases, trials are
recommended, as individual drive parameters such as belt speed
and pulley diameter also have an influence on the belt life.
The following diagram illustrates the high degree to which the
ambient temperature influences the service life of V-belts. It shows
that the special construction XHR provides within the high-temperature range for a longer service life in comparison to the standard
design. However, you cannot expect the same service life as under
normal conditions. Alternatively you can also use Optibelt Super
TX under these conditions.
Optibelt SK wedge belts and Optibelt VB classical V-belts are
approved by the State Mining Office of North Rhine-Westphalia
(LOBA NW) and the National Coal Board and can be used in
underground mining as well as in spaces and areas above ground
that are exposed to fire and explosion risks. Please request
information on sections and lengths separately.
Applications with Other Special Constructions
For particular applications such as general engineering machinery, agricultural machinery and horticulture, further special constructions are also available in intermediate sizes for
● special drives with tensioning, guide and idler pulleys
● coupling functions
● shock loads
● extreme operating conditions
These Optibelt V-belt special constructions can incorporate different tension cord types and arrangements with a variety of rubber
mixtures, different fabric qualities and a differing number of fabric
covers and top surface elements.
Extra Cold Resistant V-Belts
Special Construction XCR
Minimum order quantities on request.
Service life
All special executions and intermediate lengths must be ordered in
sets or in multiples thereof.
It is not possible to describe all criteria within the framework of
these descriptions. For further information please contact our
Applications Engineering Department.
Special Construction XHR
Standard construction
Ambient temperature (°C)
17
Standard Range
optibelt SK Wedge Belts to BS 3790/DIN 7753 Part 1/ ISO 4184
SPZ
SPB
SPC
Section SPZ
Section SPA
Section SPB
Section SPC
Datum length ISO (mm)
Ld
Datum length ISO (mm)
Ld
Datum length
ISO (mm)
Ld
Datum length
ISO (mm)
Ld
487
512
562
587
612
1037
1047
1060
1077
1087
1637
1662
1687
1700
1737
732
757
782
800
807
1382
1400
1407
1432
1457
2120
2132
2182
2207
2232
3350
3382
3550
3750
4000
1250
1320
1400
1500
1600
2000
2120
2240
2360
2500
630
637
662
670
687
1112
1120
1137
1162
1180
1762
1787
1800
1812
1837
832
850
857
882
900
1482
1500
1507
1532
1557
2240
2282
2300
2307
2332
4250
4500
1700
1800
1900
2000
2120
2650
2800
3000
3150
3350
710
722
737
750
762
1187
1202
1212
1237
1250
1862
1887
1900
1937
1987
907
932
950
957
982
1582
1600
1607
1632
1657
2360
2382
2432
2482
2500
2240
2360
2500
2650
2800
3550
3750
4000
4250
4500
772
787
800
812
825
1262
1287
1312
1320
1337
2000
2037
2120
2137
2187
1000
1007
1032
1060
1082
1682
1700
1707
1732
1757
2532
2582
2607
2632
2650
3000
3150
3250
3350
3550
4750
5000
5300
5600
6000
837
850
862
875
887
1347
1362
1387
1400
1412
2240
2287
2360
2500
2650
1107
1120
1132
1157
1180
1782
1800
1807
1832
1857
2682
2732
2782
2800
2832
3750
4000
4250
4500
4750
6300
6700
7100
7500
8000
900
912
925
937
950
1437
1462
1487
1500
1512
2800
3000
3150
3350
3550
1207
1232
1250
1257
1272
1882
1900
1907
1932
1957
2847
2882
2932
2982
3000
5000
5300
5600
6000
6300
8500
9000
9500
10000
10600
962
987
1000
1012
1024
1537
1562
1587
1600
1612
1282
1307
1320
1332
1357
1982
2000
2032
2057
2082
3032
3082
3150
3182
3282
6700
7100
7500
8000
11200
12500
Max. production length:
10 000 mm
Minimum order quantity:
Over 1800 mm =
25 belts for
standard lengths
75 belts for certain
special constructions
Max. production length:
18 000 mm
Minimum order quantity:
Over 2000 mm =
16 belts for
standard lengths
48 belts for certain
special constructions
Weight: ≈ 0.195 kg/m
Weight: ≈ 0.377 kg/m
Maximum production length: 4 500 mm
Minimum order quantity:
Over 1800 mm =
20 belts for non standard lengths
60 belts for certain special constructions
Maximum production length: 4 500 mm
Minimum order quantity:
Over 1800 mm =
31 belts for standard lengths
93 belts for certain special constructions
Weight: ≈ 0.074 kg/m
Weight: ≈ 0.123 kg/m
Datum length
18
SPA
pitch length.
Lengths in bold print are in the S=C plus range.
Standard Range
optibelt SK Wedge Belts to USA Standard RMA/MPTA
3V/9N
5V/15N
8V/25N
Section 3V/9N
Section 5V/15N
Section 8V/25N
Designation
Designation
(outside length mm)
La
Designation
Designation
(outside length mm)
La
Designation
Designation
(outside length mm)
La
3V
3V
3V
3V
3V
250
265
280
300
315
9N
9N
9N
9N
9N
635
673
711
762
800
5V
5V
5V
5V
5V
530
560
600
630
670
15N
15N
15N
15N
15N
1346
1422
1524
1600
1702
8V
8V
8V
8V
8V
1000
1120
1180
1250
1320
25N
25N
25N
25N
25N
2540
2845
2997
3175
3353
3V
3V
3V
3V
3V
335
355
375
400
425
9N 851
9N 902
9N 952
9N 1016
9N 1079
5V
5V
5V
5V
5V
710
750
800
850
900
15N
15N
15N
15N
15N
1803
1905
2032
2159
2286
8V
8V
8V
8V
8V
1400
1500
1600
1700
1800
25N
25N
25N
25N
25N
3556
3810
4064
4318
4572
3V
3V
3V
3V
3V
450
475
500
530
560
9N 1143
9N 1206
9N 1270
9N 1346
9N 1422
5V 950
5V 1000
5V 1060
5V 1120
5V 1180
15N
15N
15N
15N
15N
2413
2540
2692
2845
2997
8V
8V
8V
8V
8V
1900
2000
2120
2240
2360
25N
25N
25N
25N
25N
4826
5080
5385
5690
5994
3V
3V
3V
3V
3V
600
630
670
710
750
9N
9N
9N
9N
9N
1524
1600
1702
1803
1905
5V
5V
5V
5V
5V
1250
1320
1400
1500
1600
15N
15N
15N
15N
15N
3175
3353
3556
3810
4064
8V
8V
8V
8V
8V
2500
2650
2800
3000
3150
25N
25N
25N
25N
25N
6350
6731
7112
7620
8001
3V 800
3V 850
3V 900
3V 950
3V 1000
9N
9N
9N
9N
9N
2032
2159
2286
2413
2540
5V
5V
5V
5V
5V
1700
1800
1900
2000
2120
15N
15N
15N
15N
15N
4318
4572
4826
5080
5385
8V
8V
8V
8V
8V
3350
3550
3750
4000
4250
25N 8509
25N 9017
25N 9525
25N 10160
25N 10795
3V
3V
3V
3V
3V
9N
9N
9N
9N
9N
2692
2845
2997
3175
3353
5V
5V
5V
5V
5V
2240
2360
2500
2650
2800
15N
15N
15N
15N
15N
5690
5994
6350
6731
7112
8V 4500
8V 4750
8V 5000
25N 11430
25N 12065
25N 12700
9N 3556
5V
5V
5V
5V
3000
3150
3350
3550
15N
15N
15N
15N
7620
8001
8509
9017
1060
1120
1180
1250
1320
3V 1400
Maximum production length: 4 250 mm La
Minimum order quantity:
Over 1800 mm La =
20 belts for non standard lengths
60 belts for certain special constructions
Maximum production length: 10 000 mm La
Minimum order quantity:
Over 1800 mm La =
25 belts for non standard lengths
75 belts for certain special constructions
Weight: ≈ 0.074 kg/m
Weight: ≈ 0.195 kg/m
Lengths in bold print are in the S=C plus range.
Maximum standard production length: 18 000 mm La
Over 18 000 to 19 000 mm on request
Minimum order quantity:
Over 2540 mm La =
11 belts for non standard lengths
33 belts for certain special constructions
Weight: ≈ 0.575 kg/m
19
Standard Range
optibelt RED POWER II High Performance Wedge Belt
USA Standard RMA/MPTA
3V/9N
5V/15N
8V/25N
Section 3V/9N
Section 5V/15N
Section 8V/25N
Designation
Designation
(outside length mm)
La
Designation
Designation
Designation
(outside length mm)
La
3V
3V
3V
3V
3V
475
500
530
560
600
9N
9N
9N
9N
9N
1206
1270
1346
1422
1524
5V
5V
5V
5V
5V
530
560
600
630
670
15N
15N
15N
15N
15N
1346
1422
1524
1600
1702
8V
8V
8V
8V
8V
1000
1120
1180
1250
1320
25N
25N
25N
25N
25N
2540
2845
2997
3175
3353
3V
3V
3V
3V
3V
630
670
710
750
800
9N
9N
9N
9N
9N
1600
1702
1803
1905
2032
5V
5V
5V
5V
5V
710
750
800
850
900
15N
15N
15N
15N
15N
1803
1905
2032
2159
2286
8V
8V
8V
8V
8V
1400
1500
1600
1700
1800
25N
25N
25N
25N
25N
3556
3810
4064
4318
4572
3V 850
3V 900
3V 950
3V 1000
3V 1060
9N
9N
9N
9N
9N
2159
2286
2413
2540
2692
5V 950
5V 1000
5V 1060
5V 1120
5V 1180
15N
15N
15N
15N
15N
2413
2540
2692
2845
2997
8V
8V
8V
8V
8V
1900
2000
2120
2240
2360
25N
25N
25N
25N
25N
4826
5080
5385
5690
5994
3V
3V
3V
3V
3V
9N
9N
9N
9N
9N
2845
2997
3175
3353
3556
5V
5V
5V
5V
5V
1250
1320
1400
1500
1600
15N
15N
15N
15N
15N
3175
3353
3556
3810
4064
8V
8V
8V
8V
8V
2500
2650
2800
3000
3150
25N
25N
25N
25N
25N
6350
6731
7112
7620
8001
5V
5V
5V
5V
5V
1700
1800
1900
2000
2120
15N
15N
15N
15N
15N
4318
4572
4826
5080
5385
8V 3350
5V
5V
5V
5V
5V
2240
2360
2500
2650
2800
15N
15N
15N
15N
15N
5690
5994
6350
6731
7112
1120
1180
1250
1320
1400
5V 3000
5V 3150
20
Designation
(outside length mm)
La
25N 8509
15N 7620
15N 8001
Maximum production length: 4 000 mm La
Minimum order quantity:
1206 mm La – 2032 mm La =
80 belts for non standard lengths
Over 2032mm La =
98 belts for non standard lengths
Maximum production length: 8 000 mm La
Minimum order quantity:
1270 mm La – 2032 mm La =
50 belts for non standard lengths
Over 2032 mm La =
72 belts for non standard lengths
Weight: ≈ 0,074 kg/m
Weight: ≈ 0,195 kg/m
Maximum production length: 8 500 mm La
Minimum order quantity:
Over 2540 mm La =
40 belts for non standard lengths
Weight: ≈ 0,575 kg/m
Lengths in bold print are in the S=C plus range.
Standard Range
optibelt RED POWER II High Performance Wedge Belt
BS 3790/DIN 7753 Part 1/ ISO 4184
SPZ
SPA
SPB
SPC
Section SPZ
Section SPA
Section SPB
Section SPC
Datum length ISO (mm)
Ld
Datum length ISO (mm)
Ld
Datum length
ISO (mm)
Ld
Datum length
ISO (mm)
Ld
1202
1212
1237
1250
1262
1587
1600
1612
1637
1662
2137
2187
2240
2287
2360
1207
1232
1250
1257
1282
1700
1707
1732
1757
1782
2282
2300
2307
2332
2360
3082
3150
3182
3282
3350
1250
1320
1400
1500
1600
2000
2120
2240
2360
2500
1287
1312
1320
1337
1362
1687
1700
1737
1762
1787
2500
2650
2800
3000
3150
1307
1320
1332
1357
1382
1800
1807
1832
1857
1882
2382
2432
2482
2500
2532
3382
3550
3750
4000
1700
1800
1900
2000
2120
2650
2800
3000
3150
3350
1387
1400
1412
1437
1462
1800
1837
1862
1887
1900
3350
3550
1400
1407
1432
1457
1482
1900
1907
1932
1957
1982
2582
2607
2632
2650
2682
2240
2360
2500
2650
2800
3550
3750
4000
4250
4500
1487
1500
1512
1537
1562
1937
1987
2000
2037
2120
1500
1507
1532
1557
1582
2000
2032
2057
2082
2120
2732
2782
2800
2832
2847
3000
3150
3350
3550
3750
4750
5000
5300
5600
6000
1600
1607
1632
1657
1682
2132
2182
2207
2232
2240
2882
2932
2982
3000
3032
4000
4250
4500
4750
5000
6300
6700
7100
7500
8000
5300
5600
6000
6300
6700
7100
7500
8000
Maximum production length: 4 000 mm
Minimum order quantity:
1202 mm – 2120 mm =
76 belts for non standard lengths
Over 2120 mm =
70 belts for non standard lengths
Maximum production length: 4 000 mm
Minimum order quantity:
1207 mm – 2120 mm =
62 belts for non standard lengths
Over 2120 mm =
78 belts for non standard lengths
Weight: ≈ 0,074 kg/m
Weight: ≈ 0,123 kg/m
Datum length Ld
Max. prod. length: 8 000 mm
Minimum order quantity:
1250 mm – 2120 mm =
50 belts for non standard
lengths
Over 2120 mm =
72 belts for non standard
lengths
Max. prod. length: 8 000 mm
Minimum order quantity:
Over 2000 mm =
44 belts for non standard
lengths
Weight: ≈ 0,377 kg/m
Weight: ≈ 0,195 kg/m
pitch length Lw/Lp.
Lengths in bold print are in the S=C plus range.
21
Standard Range
optibelt VB Classical V-Belts to DIN 2215/ISO 4184
5
Section 5*
Section Y/6*
Y/6
8
Z/10
Section 8
Datum length
ISO
Ld (mm)
Inside
length
Li (mm)
Datum length
ISO
Ld (mm)
Inside
length
Li (mm)
Datum length
ISO
Ld (mm)
200
239
270
290
310
190
229
260
280
300
295
315
350
415
440
280
300
335
400
425
335∗
375∗
420∗
445∗
470∗
315∗
355∗
400∗
425∗
450∗
Z
Z
Z
Z
Z
11
121/2
14
15
16
312∗
337∗
397∗
422∗
447∗
290∗
315∗
375∗
400∗
425∗
Z
Z
Z
Z
Z
325
332
345
385
435
315
322
335
375
425
465
515
555
615
865
450
500
540
600
850
495∗
510∗
550∗
580∗
595∗
475∗
490∗
530∗
560∗
575∗
Z
Z
Z
Z
Z
17
18
19
193/4
20
472∗
497∗
502∗
522∗
537∗
450∗
475∗
480∗
500∗
515∗
485
510
540
564
610
475
500
530
554
600
620∗
650∗
690∗
720∗
730∗
600∗
630∗
670∗
700∗
710∗
Z
Z
Z
Z
Z
201/2
21
211/4
22
23
547∗
552∗
562∗
582∗
597
770∗
795∗
820∗
845
870
750∗
775∗
800∗
825
850
Z
Z
Z
Z
Z
24
25
26
27
271/2
Other sizes
on request
Other sizes
on request
Weight:
≈ 0,018 kg/m
Weight:
≈ 0,026 kg/m
Inside
length
Li (mm)
Section Z/10
Belt No.
Datum length
ISO
Ld (mm)
Inside
length
Li (mm)
Datum length
ISO
Ld (mm)
Inside
length
Li (mm)
381/2
39
40
401/2
41
997
1022
1038
1052
1063
975
1000
1016
1030
1041
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
411/2
42
43
431/4
44
1072
1082
1102
1122
1142
1050
1060
1080
1100
1120
Z
Z
Z
Z
Z
525∗
530∗
540∗
560∗
575
Z
Z
Z
Z
Z
45
46
461/2
47
48
1172
1187
1202
1216
1237
1150
1165
1180
1194
1215
Z 93
Z 98
622
652
672
692
722
600
630
650
670
700
Z
Z
Z
Z
Z
481/2
49
50
51
52
1247
1272
1292
1317
1342
1225
1250
1270
1295
1320
Belt No.
895
920
970
1020
1040
875
900
950
1000
1020
Z
Z
Z
Z
Z
28
281/2
29
291/2
30
732
747
752
772
787
710
725
730
750
765
Z
Z
Z
Z
Z
53
54
55
56
57
1368
1393
1422
1444
1472
1346
1371
1400
1422
1450
1070
1095
1140
1220
1270
1050
1075
1120
1200
1250
Z
Z
Z
Z
Z
31
311/2
32
33
331/2
797
822
842
847
872
775
800
820
825
850
Z 58
Z 59
Z 60
Z 61
Z 62
1497
1522
1546
1572
1597
1475
1500
1524
1550
1575
Z
Z
Z
Z
Z
34
35
36
37
38
887
897
922
947
972
865
875
900
925
950
Z
Z
Z
Z
Z
1622
1648
1673
1697
1722
1600
1626
1651
1675
1700
Weight:
≈ 0,042 kg/m
63
64
65
66
67
Datum length
ISO
Ld (mm)
Inside
length
Li (mm)
68
69
70
71
73
1747
1772
1797
1822
1872
1725
1750
1775
1800
1850
75
78
79
831/2
88
1922
1997
2022
2142
2262
1900
1975
2000
2120
2240
2382
2522
2360
2500
Belt No.
Maximum production length: 4 500 mm
Minimum order quantity:
Over 1800 mm =
20 belts for non standard lengths
60 belts for certain special constructions
Weight: ≈ 0,064 kg/m
Datum length
22
pitch length.
∗ raw edge, moulded cogged V-belts.
Other sizes on request.
Lengths in bold print are in the S=C plus range.
Standard Range
optibelt VB Classical V-Belts to DIN 2215/ISO 4184
A/13
Section A/13
Belt No.
Datum length
ISO
Ld (mm)
Inside length
Li (mm)
Belt No.
Datum length
ISO
Ld (mm)
Inside length
Li (mm)
Belt No.
Datum length
ISO
Ld (mm)
Inside length
Li (mm)
Belt No.
Datum length
ISO
Ld (mm)
Inside length
Li (mm)
A
A
A
A
A
16
18
19
20
21
437
487
510
538
565
407
457
480
508
535
A
A
A
A
A
41
411/2
42
421/2
43
1071
1080
1090
1105
1130
1041
1050
1060
1075
1100
A
A
A
A
A
69
70
71
72
73
1780
1805
1830
1855
1884
1750
1775
1800
1825
1854
A
A
A
A
A
105
107
108
110
112
2697
2755
2773
2830
2875
2667
2725
2743
2800
2845
A
A
A
A
A
22
23
231/2
24
25
590
605
630
640
660
560
575
600
610
630
A
A
A
A
A
431/2
44
45
451/2
46
1135
1150
1173
1180
1198
1105
1120
1143
1150
1168
A
A
A
A
A
74
75
76
77
78
1910
1930
1960
1986
2010
1880
1900
1930
1956
1980
A
A
A
A
A
114
116
118
120
124
2926
2976
3030
3078
3180
2896
2946
3000
3048
3150
A
A
A
A
A
26
261/2
27
271/2
28
680
700
716
730
740
650
670
686
700
710
A
A
A
A
A
461/2
47
471/2
48
481/2
1210
1230
1245
1250
1255
1180
1200
1215
1220
1225
A
A
A
A
A
79
80
81
82
83
2030
2062
2090
2113
2130
2000
2032
2060
2083
2100
A
A
A
A
A
128
132
136
140
144
3280
3380
3484
3580
3688
3250
3350
3454
3550
3658
A
A
A
A
A
29
291/2
30
31
311/2
760
780
797
805
830
730
750
767
775
800
A
A
A
A
A
49
50
51
52
53
1280
1300
1330
1350
1380
1250
1270
1300
1320
1350
A
A
A
A
A
831/2
84
841/2
85
86
2150
2164
2180
2190
2230
2120
2134
2150
2160
2200
A
A
A
A
A
148
158
167
187
197
3780
4030
4280
4780
5030
3750
4000
4250
4750
5000
A
A
A
A
A
32
321/2
33
34
341/2
843
855
871
880
905
813
825
841
850
875
A
A
A
A
A
54
55
56
57
58
1405
1430
1452
1480
1505
1375
1400
1422
1450
1475
A
A
A
A
A
87
88
89
90
91
2240
2270
2291
2316
2341
2210
2240
2261
2286
2311
A
A
A
A
A
35
351/2
36
37
371/2
919
930
944
955
980
889
900
914
925
950
A
A
A
A
A
59
60
61
62
63
1530
1555
1580
1605
1630
1500
1525
1550
1575
1600
A
A
A
A
A
92
93
94
95
96
2367
2390
2418
2443
2468
2337
2360
2388
2413
2438
A
A
A
A
A
38
381/2
39
40
401/2
995
1005
1030
1046
1060
965
975
1000
1016
1030
A
A
A
A
A
64
65
66
67
68
1655
1680
1706
1730
1755
1625
1650
1676
1700
1725
A
A
A
A
A
97
98
100
102
104
2494
2530
2570
2621
2680
2464
2500
2540
2591
2650
Maximum production length: 10 000 mm
Minimum order quantity:
Over 1800 mm =
31 belts for non standard lengths
93 belts for certain special constructions
Weight: ≈ 0,109 kg/m
Datum length
pitch length.
Other sizes on request.
Lengths in bold print are in the S=C plus range.
23
Standard Range
optibelt VB Classical V-Belts to DIN 2215/ISO 4184
B/17
Section B/17
Belt No.
Datum length
ISO
Ld (mm)
Inside length
Li (mm)
B 23
B 24
B 25
B 26
B 261/2
B 27
B 28
B 29
B 30
B 31
B 32
B 321/2
B 33
B 34
B 341/2
B 35
B 36
B 37
B 371/2
B 38
B 381/2
B 39
B 40
B 401/2
B 41
B 411/2
B 42
B 421/2
B 43
B 431/4
B 44
B 45
B 451/2
B 46
B 461/2
B 47
B 48
B 481/2
B 49
B 50
610
655
670
690
710
726
750
765
790
815
840
865
876
890
915
929
940
965
990
1005
1015
1040
1056
1070
1080
1090
1100
1115
1130
1140
1160
1190
1203
1215
1220
1240
1255
1265
1290
1315
570
615
630
650
670
686
710
725
750
775
800
825
836
850
875
889
900
925
950
965
975
1000
1016
1030
1040
1050
1060
1075
1090
1100
1120
1150
1163
1175
1180
1200
1215
1225
1250
1275
Belt No.
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
Datum length
ISO
Ld (mm)
Inside length
Li (mm)
1340
1360
1375
1390
1400
1412
1440
1462
1490
1513
1540
1565
1590
1615
1640
1665
1690
1716
1740
1765
1790
1801
1815
1840
1869
1890
1920
1940
1970
1990
2021
2040
2072
2100
2123
2140
2160
2174
2200
2240
1300
1320
1335
1350
1360
1372
1400
1422
1450
1473
1500
1525
1550
1575
1600
1625
1650
1676
1700
1725
1750
1761
1775
1800
1829
1850
1880
1900
1930
1950
1981
2000
2032
2060
2083
2100
2120
2134
2160
2200
51
52
521/2
53
531/2
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
691/2
70
71
72
73
74
75
76
77
78
79
80
81
82
83
831/2
84
85
86
Belt No.
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
87
88
89
90
91
92
93
94
941/2
95
96
961/2
97
98
99
100
101
102
103
104
105
106
107
108
110
112
114
115
116
118
120
122
124
126
128
130
132
134
136
138
Datum length
ISO
Ld (mm)
Inside length
Li (mm)
2250
2280
2301
2326
2340
2377
2400
2428
2440
2453
2478
2490
2505
2540
2555
2580
2605
2640
2656
2690
2707
2740
2758
2790
2840
2885
2940
2961
2990
3040
3088
3139
3190
3240
3290
3342
3390
3444
3490
3545
2210
2240
2261
2286
2300
2337
2360
2388
2400
2413
2438
2450
2465
2500
2515
2540
2565
2600
2616
2650
2667
2700
2718
2750
2800
2845
2900
2921
2950
3000
3048
3099
3150
3200
3250
3302
3350
3404
3450
3505
Belt No.
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
140
142
144
146
148
150
151
152
154
155
156
158
160
162
165
167
173
175
177
180
187
195
197
208
210
220
236
240
248
264
276
280
Datum length
ISO
Ld (mm)
Inside length
Li (mm)
3590
3640
3698
3740
3790
3850
3890
3901
3952
3990
4002
4040
4104
4155
4240
4290
4434
4490
4540
4612
4790
4993
5040
5340
5374
5640
6040
6136
6340
6740
7040
7140
3550
3600
3658
3700
3750
3810
3850
3861
3912
3950
3962
4000
4064
4115
4200
4250
4394
4450
4500
4572
4750
4953
5000
5300
5334
5600
6000
6096
6300
6700
7000
7100
Maximum production length: 15 500 mm
Minimum order quantity:
Over 1800 mm =
21 belts for non standard lengths
63 belts for certain special constructions
Weight: ≈ 0,196 kg/m
Datum length
24
pitch length.
Other sizes on request.
Lengths in bold print are in the S=C plus range.
Standard Range
optibelt VB Classical V-Belts to DIN 2215/ISO 4184
20
C/22
25
Section 20
Section C/22
Section 25
Datum length
ISO
Ld (mm)
Inside length
Li (mm)
Belt
No.
Datum length
ISO
Ld (mm)
Inside length
Li (mm)
950
1050
1170
1230
1300
1370
1450
1550
1650
1750
1850
1950
2050
2170
2290
2410
2550
2700
2850
3050
3200
3400
3600
3800
4050
4550
5050
6050
900
1000
1120
1180
1250
1320
1400
1500
1600
1700
1800
1900
2000
2120
2240
2360
2500
2650
2800
3000
3150
3350
3550
3750
4000
4500
5000
6000
C 43
C 47
C 48
C 49
C 51
C 52
C 53
C 54
C 55
C 56
C 57
C 58
C 59
C 60
C 61
C 62
C 63
C 65
C 66
C 67
C 68
C 69
C 70
C 71
C 72
C 73
C 74
C 75
C 76
C 77
C 78
C 79
C 80
C 81
C 82
C 83
C 831/2
C 84
C 85
C 86
C 87
C 88
C 89
C 90
C 92
C 93
C 94
C 95
C 96
C 961/2
C 97
C 98
C 99
C 100
C 101
1148
1258
1273
1308
1353
1378
1408
1433
1458
1483
1508
1533
1558
1582
1608
1632
1658
1708
1734
1758
1785
1808
1836
1858
1887
1912
1938
1958
1988
2014
2039
2058
2090
2118
2141
2166
2178
2192
2217
2242
2268
2298
2319
2344
2395
2418
2446
2471
2496
2508
2522
2558
2583
2598
2618
1090
1200
1215
1250
1295
1320
1350
1375
1450
1425
1450
1475
1500
1524
1550
1574
1600
1650
1676
1700
1727
1750
1778
1800
1829
1854
1880
1900
1930
1956
1981
2000
2032
2060
2083
2108
2120
2134
2159
2184
2210
2240
2261
2286
2337
2360
2388
2413
2438
2450
2464
2500
2525
2540
2560
Maximum production length:
10 000 mm
Minimum order quantity:
Over 1800 mm =
18 belts for non standard lengths
54 belts for certain special
constructions
Maximum standard production length: 18 000 mm
Over 18 000 to 19 000 mm on request
Minimum order quantity:
Over 1800 mm =
16 belts for non standard lengths
48 belts for certain special constructions
Weight: ≈ 0,266 kg/m
Weight: ≈ 0,324 kg/m
Datum length
pitch length.
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
Belt
No.
Datum length
ISO
Ld (mm)
Inside length
Li (mm)
102
104
105
106
108
110
112
114
115
116
117
118
120
122
124
126
128
130
132
134
136
138
140
142
144
146
148
150
158
162
166
167
168
170
173
175
177
180
187
190
195
197
208
210
220
225
236
240
248
264
270
280
295
300
315
2649
2700
2725
2750
2808
2858
2903
2954
2979
3008
3023
3058
3106
3157
3208
3258
3308
3360
3408
3462
3508
3563
3608
3665
3716
3758
3808
3868
4058
4158
4274
4308
4325
4376
4452
4503
4558
4630
4808
4884
5011
5058
5358
5392
5658
5773
6058
6154
6358
6758
6916
7158
7558
7678
8058
2591
2642
2667
2692
2750
2800
2845
2896
2921
2950
2965
3000
3048
3099
3150
3200
3250
3302
3350
3404
3450
3505
3550
3607
3658
3700
3750
3810
4000
4100
4216
4250
4267
4318
4394
4445
4500
4572
4750
4826
4953
5000
5300
5334
5600
5715
6000
6096
6300
6700
6858
7100
7500
7620
8000
Datum length
ISO
Ld (mm)
Inside length
Li (mm)
1460
1560
1660
1760
1860
1960
2060
2180
2300
2420
2560
2710
2760
2860
3060
3210
3410
3610
3810
4060
4310
4560
4810
5060
5360
5660
6060
6360
6760
7160
7560
8060
8560
9060
1400
1500
1600
1700
1800
1900
2000
2120
2240
2360
2500
2650
2700
2800
3000
3150
3350
3550
3750
4000
4250
4500
4750
5000
5300
5600
6000
6300
6700
7100
7500
8000
8500
9000
Maximum standard production length:
18 000 mm
Over 18 000 to 19 000 mm
on request
Minimum order quantity:
Over 1800 mm =
14 belts for non standard lengths
42 belts for certain special
constructions
Weight: ≈ 0,420 kg/m
Other sizes on request.
Lengths in bold print are in the S=C plus range.
25
Standard Range
optibelt VB Classical V-Belts to DIN 2215/ISO 4184
Belt No.
D 79
D 98
D 104
D 110
D 118
D 120
D 124
D 128
D 132
D 135
D 136
D 140
D 144
D 148
D 154
D 158
D 162
D 167
D 173
D 177
D 180
D 187
D 195
D 197
D 208
D 210
D 220
D 225
D 236
D 240
D 248
D 264
D 270
D 280
D 295
D 300
D 315
D 330
D 335
D 354
D 374
D 394
D 441
D/32
E/40
Section D/32
Section E/40
Datum length ISO
Ld (mm)
Inside length
Li
2075
2575
2725
2875
3075
3123
3225
3326
3425
3500
3529
3625
3733
3825
4000
4075
4190
4325
4469
4575
4647
4825
5028
5075
5375
5409
5675
5790
6075
6171
6375
6775
6933
7175
7575
7695
8075
8457
8575
9075
9575
10075
11275
2000
2500
2650
2800
3000
3048
3150
3251
3350
3425
3454
3550
3658
3750
3925
4000
4115
4250
4394
4500
4572
4750
4953
5000
5300
5334
5600
5715
6000
6096
6300
6700
6858
7100
7500
7620
8000
8382
8500
9000
9500
10000
11200
Maximum standard production length: 18 000 mm
Over 18 000 to 19 000 mm on request
Minimum order quantity:
Over 2000 mm =
11 belts for non standard lengths
33 belts for certain special constructions
Weight: ≈ 0,668 kg/m
Datum length
26
pitch length.
Belt No.
E 118
E 158
E 197
E 220
E 236
E 248
E 280
E 295
E 315
E 354
E 394
E 441
E 492
Datum length ISO
Ld (mm)
Inside length
Li
3080
4080
5080
5680
6080
6380
7180
7580
8080
9080
10080
11280
12580
3000
4000
5000
5600
6000
6300
7100
7500
8000
9000
10000
11200
12500
Maximum production length: 19 000 mm
Minimum order quantity for all sizes:
7 belts
21 belts for certain special constructions
Weight: ≈ 0,958 kg/m
Other sizes on request.
Lengths in bold print are in the S=C plus range.
Standard Range
optibelt SUPER TX M=S Wedge Belts – Raw Edge, Moulded Cogged –
DIN 7753 Part 1/ISO 4184 and RMA/MPTA
XPZ
XPA
XPB
XPC
Section XPZ
Section XPA
Section XPB
Section XPC
Datum length ISO
Ld (mm)
Datum length ISO
Ld (mm)
Datum length ISO
Ld (mm)
Datum length ISO
Ld (mm)
3VX/9NX
Section 3VX/9NX
Designation
Designation
La
(outside length mm)
5VX/15NX
Section 5VX/15NX
Designation
Designation
La
(outside length mm)
587
612
630
637
662
1202
1212
1237
1250
1262
732
757
782
800
807
1500
1507
1532
1557
1582
1250
1320
1400
1500
1600
2000
2120
2240
2360
2500
3VX
3VX
3VX
3VX
3VX
250
265
280
300
315
9NX
9NX
9NX
9NX
9NX
635
673
711
762
800
5VX
5VX
5VX
5VX
5VX
500
530
560
600
630
15NX
15NX
15NX
15NX
15NX
1270
1346
1422
1524
1600
670
687
710
737
750
1287
1312
1320
1337
1362
832
850
857
882
900
1600
1607
1632
1700
1757
1700
1800
1900
2000
2120
2650
2800
3000
3150
3350
3VX
3VX
3VX
3VX
3VX
335
355
375
400
425
9NX
9NX
9NX
9NX
9NX
851
902
952
1016
1079
5VX
5VX
5VX
5VX
5VX
670
710
750
800
850
15NX
15NX
15NX
15NX
15NX
1702
1803
1905
2032
2159
762
772
787
800
812
1387
1400
1412
1437
1462
907
932
950
957
982
1800
1882
1900
2000
2120
2240
2360
2500
2650
2800
3550
3VX
3VX
3VX
3VX
3VX
450
475
500
530
560
9NX
9NX
9NX
9NX
9NX
1143
1206
1270
1346
1422
5VX
5VX
5VX
5VX
5VX
900
950
1000
1060
1120
15NX
15NX
15NX
15NX
15NX
2286
2413
2540
2692
2845
825
837
850
862
875
1487
1500
1512
1537
1562
1000
1007
1030
1060
1082
2240
2360
2500
2650
2800
3000
3150
3350
3550
3VX
3VX
3VX
3VX
3VX
600
630
670
710
750
9NX
9NX
9NX
9NX
9NX
1524
1600
1702
1803
1905
5VX
5VX
5VX
5VX
1180
1250
1320
1400
15NX
15NX
15NX
15NX
2997
3175
3353
3556
887
900
912
925
937
1587
1600
1612
1662
1700
1107
1120
1132
1157
1180
3000
3150
3350
3550
3VX
3VX
3VX
3VX
3VX
800
850
900
950
1000
9NX
9NX
9NX
9NX
9NX
2032
2159
2286
2413
2540
950
962
987
1000
1012
1762
1800
1900
2000
2120
1207
1232
1250
1257
1272
3VX
3VX
3VX
3VX
3VX
1060
1120
1180
1250
1320
9NX
9NX
9NX
9NX
9NX
2692
2845
2997
3175
3353
1037
1060
1077
1087
1112
2240
2360
2500
2650
2800
1282
1307
1320
1332
1357
3VX 1400
1120
1137
1162
1180
1187
3000
3150
3350
3550
1382
1400
1432
1457
1482
Weight:
≈ 0,065 kg/m
Datum length
Weight:
≈ 0,111 kg/m
pitch length.
Weight:
≈ 0,183 kg/m
Weight:
≈ 0,340 kg/m
Weight:
≈ 0,065 kg/m
9NX 3556
Weight:
≈ 0,183 kg/m
Other sizes on request.
27
Standard Range
optibelt SUPER TX M=S V-Belt – Raw Edge, Moulded Cogged –
to BS 3790/DIN 2215/ISO 4184
ZX/X10
AX/X13
Section ZX/X10
ZX
ZX
ZX
ZX
ZX
ZX
ZX
ZX
ZX
ZX
ZX
ZX
ZX
ZX
ZX
ZX
ZX
ZX
ZX
ZX
ZX
ZX
23
24
25
26
27
28
29
291/2
311/2
32
33
331/2
35
36
37
38
40
42
461/2
52
55
59
597
622
652
672
692
732
752
772
822
842
847
872
897
922
947
972
1038*
1082*
1202*
1342*
1422*
1522*
Weight: ≈ 0,062 kg/m
Datum length
28
Section AX/X13
Datum length
ISO
Ld (mm)
Belt No.
pitch length.
BX/X17
Belt No.
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
AX
Datum length
ISO
Ld (mm)
23
231/2
24
25
261/2
27
28
29
30
31
32
33
34
35
351/2
36
37
371/2
38
39
40
411/2
42
43
44
451/2
46
47
48
49
50
51
52
53
54
55
56
57
58
59
62
63
67
70
71
75
79
88
93
98
104
110
118
124
132
605
630
640
660
700
716
740
760
797
830
843
871
880
919
930
944
955
980
995
1030
1046
1080
1090
1130
1150
1180
1198
1230
1250
1280
1300
1330
1350
1380
1405
1430
1452
1480
1505
1530
1605
1630
1730
1805
1830
1930
2030
2270
2390
2530
2680*
2830*
3030*
3180*
3380*
Weight: ≈ 0,099 kg/m
Other sizes on request.
*Non stock items.
CX/X22
Section BX/X17
Belt No.
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
BX
Datum length
ISO
Ld (mm)
23
25
26
28
29
30
31
32
33
34
341/2
35
36
37
38
39
40
41
42
43
44
45
451/2
46
461/2
47
48
49
50
51
52
53
54
55
57
58
59
61
62
63
67
69
71
73
75
79
88
93
98
103
104
110
118
124
132
Weight: ≈ 0,165 kg/m
610
670
690
750
765
790
815
840
876
890
915
929
940
965
1005
1040
1056
1080
1100
1130
1160
1190
1203
1215
1220
1240
1255
1290
1315
1340
1360
1390
1412
1440
1490
1513
1540
1590
1615
1640
1740
1790
1840
1890
1940
2040
2280
2400
2540
2656*
2690*
2840*
3040*
3190*
3390*
Section CX/X22
Belt No.
CX
CX
CX
CX
CX
CX
CX
CX
CX
CX
CX
CX
CX
CX
CX
CX
CX
CX
CX
CX
CX
CX
CX
39
43
49
52
55
59
62
67
68
71
75
79
81
85
88
90
93
96
98
110
118
124
132
Weight: ≈ 0,276 kg/m
Datum length
ISO
Ld (mm)
1058*
1148*
1308*
1378*
1458*
1558*
1632*
1758*
1758*
1858*
1958*
2058*
2118*
2217*
2298*
2344*
2418*
2496*
2558*
2858*
3058*
3208*
3408*
Standard Range
optibelt KB Kraftbands with Wedge Belts
to DIN/ISO
Section SPZ
Section
SPZ
SPA
SPB
SPC
bo ≈ (mm)
9,7
12,7
16,5
22,0
h ≈ (mm)
10,5
12,5
15,6
22,6
Section SPA
Section SPB
Section SPC
Datum length
ISO
Ld (mm)
Datum length
ISO
Ld (mm)
Datum length
ISO
Ld (mm)
1250
1400
1500
1600
1700
1250
1400
1500
1600
1700
2000
2120
2240
2360
2500
3000
3150
3350
3550
3750
1800
1900
2000
2120
2240
1800
1900
2000
2120
2240
2650
2800
3000
3150
3350
4000
4250
4500
4750
5000
2360
2500
2650
2800
3000
2360
2500
2650
2800
3000
3550
3750
4000
4250
4500
5300
5600
6000
6300
6700
3150
3350
3550
3150
3350
3550
3750
4000
4750
5000
5300
5600
6000
7100
7500
8000
8500
9000
4250
4500
6300
6700
7100
7500
8000
9500
10000
10600
11200
11800
Datum length
ISO
Ld (mm)
12500
Maximum production length:
4 500 mm Ld
Non standard lengths from 1800 mm Ld
Minimum order quantity
for special lengths:
8 belts with 5 ribs or
10 belts with 4 ribs or
14 belts with 3 ribs or
21 belts with 2 ribs
or a multiple thereof
Weight: ≈ 0,120 kg/m per rib
Minimum order quantities for
Aramid belts on request.
Datum length
pitch length.
Maximum production length:
4 500 mm Ld
Non standard lengths from 1800 mm Ld
Minimum order quantity
for all sizes:
6 belts with 5 ribs or
8 belts with 4 ribs or
11 belts with 3 ribs or
16 belts with 2 ribs
or a multiple thereof
Weight: ≈ 0,166 kg/m per rib
Minimum order quantities for
Aramid belts on request.
Other sizes on request.
Maximum production length:
10 000 mm Ld
Non standard lengths from 2000 mm Ld
Minimum order quantity
for special lengths:
4 belts with 5 ribs or
5 belts with 4 ribs or
7 belts with 3 ribs or
11 belts with 2 ribs
or a multiple thereof
Weight: ≈ 0,261 kg/m per rib
Minimum order quantities for
Aramid belts on request.
Maximum production length:
12 500 mm Ld
Non standard lengths from 3000 mm Ld
Minimum order quantity
for all sizes:
3 belts with 5 ribs or
4 belts with 4 ribs or
5 belts with 3 ribs or
8 belts with 2 ribs
or a multiple thereof
Weight: ≈ 0,555 kg/m per rib
Minimum order quantities for
Aramid belts on request.
29
Standard Range
optibelt KB Kraftbands with Wedge Belts
to RMA/MPTA
Section 3V/9J
Designation
3V/9J
bo ≈ (mm)
9,0
15,0
25,0
h ≈ (mm)
9,9
15,1
25,5
Section 5V/15J
Designation
(outside length mm)
La
Designation
5V/15J 8V/25J
Section 8V/25J
Designation
(outside length mm)
La
Designation
Designation
(outside length mm)
La
3V
3V
3V
3V
3V
500
530
560
600
630
9J
9J
9J
9J
9J
1270
1346
1422
1524
1600
5V
5V
5V
5V
5V
560
600
630
670
710
15J
15J
15J
15J
15J
1422
1524
1600
1702
1803
8V
8V
8V
8V
8V
1000
1060
1120
1180
1250
25J
25J
25J
25J
25J
2540
2692
2845
2997
3175
3V
3V
3V
3V
3V
670
710
750
800
850
9J
9J
9J
9J
9J
1702
1803
1905
2032
2159
5V
5V
5V
5V
5V
750
800
850
900
950
15J
15J
15J
15J
15J
1905
2032
2159
2286
2413
8V
8V
8V
8V
8V
1320
1400
1500
1600
1700
25J
25J
25J
25J
25J
3353
3556
3810
4064
4318
3V
3V
3V
3V
3V
900
950
1000
1060
1120
9J
9J
9J
9J
9J
2286
2413
2540
2692
2845
5V
5V
5V
5V
5V
1000
1060
1120
1180
1250
15J
15J
15J
15J
15J
2540
2692
2845
2997
3175
8V
8V
8V
8V
8V
1800
1900
2000
2120
2240
25J
25J
25J
25J
25J
4572
4826
5080
5385
5690
3V
3V
3V
3V
1180
1250
1320
1400
9J
9J
9J
9J
2997
3175
3353
3556
5V
5V
5V
5V
5V
1320
1400
1500
1600
1700
15J
15J
15J
15J
15J
3353
3556
3810
4064
4318
8V
8V
8V
8V
8V
2360
2500
2650
2800
3000
25J
25J
25J
25J
25J
5994
6350
6731
7112
7620
5V
5V
5V
5V
5V
1800
1900
2000
2120
2240
15J
15J
15J
15J
15J
4572
4826
5080
5385
5690
8V
8V
8V
8V
8V
3150
3350
3550
3750
4000
25J 8001
25J 8509
25J 9017
25J 9525
25J 10160
5V
5V
5V
5V
5V
2360
2500
2650
2800
3000
15J
15J
15J
15J
15J
5994
6350
6731
7112
7620
8V 4250
8V 4500
8V 4750
25J 10795
25J 11430
25J 12065
5V 3150
5V 3350
5V 3550
Maximum production length: 4 250 mm La
Non standard lengths from 1800 mm La
Minimum order quantity
for special lengths:
9 belts with 5 ribs or
12 belts with 4 ribs or
16 belts with 3 ribs or
24 belts with 2 ribs
or a multiple thereof
Weight: ≈ 0,102 kg/m per rib
Minimum order quantities for
Aramid belts on request.
30
Section
15J 8001
15J 8509
15J 9017
Maximum production length: 10 000 mm La
Non standard lengths from 1800 mm La
Minimum order quantity
for special lengths:
6 belts with 5 ribs or
7 belts with 4 ribs or
10 belts with 3 ribs or
15 belts with 2 ribs
or a multiple thereof
Weight: ≈ 0,252 kg/m per rib
Minimum order quantities for
Aramid belts on request.
Maximum standard length: 15 000 mm La
Over 15 000 to 18 000 mm on request
Non standard lengths from 2540 mm La
Minimum order quantity
for all sizes:
2 belts with 5 ribs or
2 belts with 4 ribs or
3 belts with 3 ribs
or a multiple thereof
Weight: ≈ 0,693 kg/m per rib
Minimum order quantities for
Aramid belts on request.
Other sizes on request.
Standard Range
optibelt KBX Kraftbands – Raw Edge, Moulded Cogged –
to USA Standard RMA/MPTA
Section 3VX/9JX
Designation
Section
3VX/9JX
5VX/15JX
bo ≈ (mm)
9,0
15,0
h ≈ (mm)
9,9
15,1
Section 5VX/15JX
Designation La
(outside length mm)
Designation
Designation La
(outside length mm)
3VX
3VX
3VX
3VX
3VX
500
530
560
600
630
9JX
9JX
9JX
9JX
9JX
1270
1346
1422
1524
1600
5VX
5VX
5VX
5VX
5VX
500
530
560
600
630
15JX
15JX
15JX
15JX
15JX
1270
1346
1422
1524
1600
3VX
3VX
3VX
3VX
3VX
670
710
750
800
850
9JX
9JX
9JX
9JX
9JX
1702
1803
1905
2032
2159
5VX
5VX
5VX
5VX
5VX
670
710
750
800
850
15JX
15JX
15JX
15JX
15JX
1702
1803
1905
2032
2159
3VX
3VX
3VX
3VX
3VX
900
950
1000
1060
1120
9JX
9JX
9JX
9JX
9JX
2286
2413
2540
2692
2845
5VX
5VX
5VX
5VX
5VX
900
950
1000
1060
1120
15JX
15JX
15JX
15JX
15JX
2286
2413
2540
2692
2845
3VX
3VX
3VX
3VX
1180
1250
1320
1400
9JX
9JX
9JX
9JX
2997
3175
3353
3556
5VX
5VX
5VX
5VX
1180
1250
1320
1400
15JX
15JX
15JX
15JX
2997
3175
3353
3556
Minimum order quantity on request.
Kraftbands with the Sections XPZ, XPA, XPB, AX/HAX and BX/HBX can be supplied on request.
Weight: ≈ 0,117 kg/m per rib
Weight: ≈ 0,241 kg/m per rib
Other sizes on request.
31
Standard Range
optibelt KB Kraftbands with Classical V-Belts
to DIN/ISO, ASAE
Section A/HA
(Section A)
Inside length
Belt
No.
Li (mm)
(Section HA)
Outside
length
La (mm)
Section
A/HA
B/HB
C/HC
D/HD
bo ≈ (mm)
13,0
17,0
22,0
32,0
h ≈ (mm)
9,9
13,0
16,2
22,4
Section B/HB
(Section B)
Inside length
Belt
No.
Li (mm)
(Section HB)
Outside
length
La (mm)
Section C/HC
(Section B)
Inside length
Belt
No.
Li (mm)
(Section HB)
Outside
length
La (mm)
(Section C)
Inside length
Belt
No.
Li (mm)
(Section HC)
Outside
length
La (mm)
Section D/HD
(Section D)
Inside length
Belt
No.
Li (mm)
(Section HD)
Outside
length
La (mm)
47
51
56
57
59
1200
1300
1422
1450
1500
1236
1336
1458
1486
1536
47
51
55
59
61
1200
1300
1400
1500
1550
1262
1362
1462
1562
1612
146
148
158
167
177
3700
3750
4000
4250
4500
3762
3812
4062
4312
4562
90
98
108
120
128
2286
2500
2750
3048
3250
2361
2575
2825
3123
3325
98
110
120
128
144
2500
2800
3048
3250
3658
2611
2911
3159
3361
3769
64
67
71
75
79
1625
1700
1800
1900
2000
1661
1736
1836
1936
2036
63
64
67
71
73
1600
1625
1700
1800
1850
1662
1687
1762
1862
1912
187
197
208
220
4750
5000
5300
5600
4812
5062
5362
5662
140
146
151
167
177
3550
3700
3850
4250
4500
3625
3775
3925
4325
4575
158
162
173
180
195
4000
4115
4394
4572
4953
4111
4226
4505
4683
5064
88
98
100
104
112
2240
2500
2540
2650
2845
2276
2536
2570
2686
2881
75
79
83
88
91
1900
2000
2100
2240
2300
1962
2062
2162
2302
2362
187
197
208
220
236
4750
5000
5300
5600
6000
4825
5075
5375
5675
6075
210
225
240
255
270
5334
5715
6096
6477
6858
5445
5826
6207
6588
6969
120
128
144
158
167
3048
3250
3658
4000
4250
3084
3286
3694
4036
4286
941/2
98
102
106
112
2400
2500
2600
2700
2845
2462
2562
2662
2762
2907
248
6300
6375
285
300
315
330
345
7239
7620
8000
8382
8763
7350
7731
8111
8493
8874
187
4750
4786
118
120
128
132
140
3000
3048
3250
3350
3550
3062
3110
3312
3412
3612
360
390
420
450
480
9144
9906
10668
11430
12200
9255
10017
10779
11541
12311
540
600
660
700
13716
15240
16764
17780
13827
15351
16875
17891
Maximum production length: 8 000 mm
Non standard lengths from 1800 mm
Minimum order quantity
for non listed sizes:
1200 to 2000 mm
6 belts with 5 ribs or
8 belts with 4 ribs or
10 belts with 3 ribs or
16 belts with 2 ribs
or a multiple thereof
2001 to 8000 mm
6 belts with 5 ribs or
8 belts with 4 ribs or
11 belts with 3 ribs or
16 belts with 2 ribs
or a multiple thereof
Weight: ≈ 0,163 kg/m per rib
Minimum order quantities for
Aramid belts on request.
Other sizes on request.
32
Maximum production length: 10000 mm
Non standard lengths from 1800 mm
Minimum order quantity
for non listed sizes:
5 belts with 5 ribs or
6 belts with 4 ribs or
9 belts with 3 ribs or
13 belts with 2 ribs
or a multiple thereof
Weight: 1≈ 0,266 kg/m per rib
Minimum order quantities for
Aramid belts on request.
Max. production length: 12 000 mm
Non standard lengths
from 2286 mm
Minimum order quantity
for special lengths:
2286 to 10 000 mm
4 belts with 5 ribs or
5 belts with 4 ribs or
6 belts with 3 ribs or
10 belts with 2 ribs
or a multiple thereof
10 001 to 12 000 mm
3 belts with 5 ribs or
4 belts with 4 ribs or
5 belts with 3 ribs or
8 belts with 2 ribs
or a multiple thereof
Weight: ≈ 0,447 kg/m per rib
Minimum order quantities for
Aramid belts on request.
Max. production length: 12 200 mm
Non standard lengths
from 2500 mm
Minimum order quantities
for all sizes:
2 belts with 5 ribs or
2 belts with 4 ribs or
3 belts with 3 ribs or
5 belts with 2 ribs
or a multiple thereof
Weight: ≈ 0,798 kg/m per rib
Minimum order quantities for
Aramid belts on request.
Standard Range
optibelt RED POWER II Kraftbands with High Performance Wedge Belts
DIN/ISO
Section
SPZ
SPA
SPB
SPC
bo ≈ (mm)
9,7
12,7
16,5
22,0
h ≈ (mm)
10,5
12,5
15,6
22,6
Section SPZ
Section SPA
Section SPB
Section SPC
Datum length
ISO
Ld (mm)
Datum length
ISO
Ld (mm)
Datum length
ISO
Ld (mm)
Datum length
ISO
Ld (mm)
1250
1400
1500
1600
1700
1250
1400
1500
1600
1700
2000
2120
2240
2360
2500
3000
3150
3350
3550
3750
1800
1900
2000
2120
2240
1800
1900
2000
2120
2240
2650
2800
3000
3150
3350
4000
4250
4500
4750
5000
2360
2500
2650
2800
3000
2360
3550
3750
4000
4250
4500
5300
5600
6000
6300
6700
4750
5000
5300
5600
6000
7100
7500
8000
3150
3350
3550
2500
2650
2800
3000
3150
3350
3550
3750
4000
4250
4500
6300
6700
7100
7500
8000
Maximum production length: 4 500 mm Ld
Non standard lengths from 1800 mm Ld
Minimum order quantity
for special lengths:
8 belts with 5 ribs or
10 belts with 4 ribs or
14 belts with 3 ribs or
21 belts with 2 ribs
or a multiple thereof
Maximum production length: 4 500 mm Ld
Non standard lengths from 1800 mm Ld
Minimum order quantity
for special lengths:
6 belts with 5 ribs or
8 belts with 4 ribs or
11 belts with 3 ribs or
16 belts with 2 ribs
or a multiple thereof
Maximum production length: 8 000 mm Ld
Non standard lengths from 2000 mm Ld
Minimum order quantity
for special lengths:
12 belts with 5 ribs or
15 belts with 4 ribs or
20 belts with 3 ribs or
30 belts with 2 ribs
or a multiple thereof
Maximum production length: 8 000 mm Ld
Non standard lengths from 3000 mm Ld
Minimum order quantity
for all sizes:
8 belts with 5 ribs or
11 belts with 4 ribs or
14 belts with 3 ribs or
22 belts with 2 ribs
or a multiple thereof
Weight:
≈ 0,120 kg/m per rib
Weight:
≈ 0,166 kg/m per rib
Weight:
≈ 0,261 kg/m per rib
Weight:
≈ 0,555 kg/m per rib
Datum length Ld
pitch length Lw/Lp.
Other sizes on request.
33
Standard Range
optibelt RED POWER II Kraftbands with High Performance Wedge Belts
DIN/ISO, RMA/MPTA
Section 3V/9J
Designation
3V/9J
bo ≈ (mm)
9,0
15,0
25,0
h ≈ (mm)
9,9
15,1
25,5
Section 5V/15J
Designation
(outside length mm)
La
Designation
5V/15J 8V/25J
Section 8V/25J
Designation
(outside length mm)
La
Designation
Designation
(outside length mm)
La
3V
3V
3V
3V
3V
500
530
560
600
630
9J
9J
9J
9J
9J
1270
1346
1422
1524
1600
5V
5V
5V
5V
5V
560
600
630
670
710
15J
15J
15J
15J
15J
1422
1524
1600
1702
1803
8V
8V
8V
8V
8V
1000
1060
1120
1180
1250
25J
25J
25J
25J
25J
2540
2692
2845
2997
3175
3V
3V
3V
3V
3V
670
710
750
800
850
9J
9J
9J
9J
9J
1702
1803
1905
2032
2159
5V
5V
5V
5V
5V
750
800
850
900
950
15J
15J
15J
15J
15J
1905
2032
2159
2286
2413
8V
8V
8V
8V
8V
1320
1400
1500
1600
1700
25J
25J
25J
25J
25J
3353
3556
3810
4064
4318
3V
3V
3V
3V
3V
900
950
1000
1060
1120
9J
9J
9J
9J
9J
2286
2413
2540
2692
2845
5V
5V
5V
5V
5V
1000
1060
1120
1180
1250
15J
15J
15J
15J
15J
2540
2692
2845
2997
3175
8V
8V
8V
8V
8V
1800
1900
2000
2120
2240
25J
25J
25J
25J
25J
4572
4826
5080
5385
5690
3V
3V
3V
3V
1180
1250
1320
1400
9J
9J
9J
9J
2997
3175
3353
3556
5V
5V
5V
5V
5V
1320
1400
1500
1600
1700
15J
15J
15J
15J
15J
3353
3556
3810
4064
4318
8V
8V
8V
8V
8V
2360
2500
2650
2800
3000
25J
25J
25J
25J
25J
5994
6350
6731
7112
7620
5V
5V
5V
5V
5V
1800
1900
2000
2120
2240
15J
15J
15J
15J
15J
4572
4826
5080
5385
5690
8V 3150
8V 3350
5V
5V
5V
5V
5V
2360
2500
2650
2800
3000
15J
15J
15J
15J
15J
5994
6350
6731
7112
7620
5V 3150
25J 8001
25J 8509
15J 8001
Maximum production length: 4 000 mm L a
Non standard lengths from 1800 mm La
Minimum order quantities for special lengths:
Over 2032 mm La
1270 to 2032 mm La
23 belts with 5 ribs or
19 belts with 5 ribs or
29 belts with 4 ribs or
24 belts with 4 ribs or
38 belts with 3 ribs or
32 belts with 3 ribs or
58 belts with 2 ribs
48 belts with 2 ribs
or a multiple thereof
or a multiple thereof
Maximum production length: 8 000 mm La
Non standard lengths from 1800 mm La
Minimum order quantities for special lengths:
Over 2032 mm La
1270 to 2032 mm La
13 belts with 5 ribs or
12 belts with 5 ribs or
16 belts with 4 ribs or
15 belts with 4 ribs or
22 belts with 3 ribs or
20 belts with 3 ribs or
33 belts with 2 ribs
30 belts with 2 ribs
or a multiple thereof
or a multiple thereof
Weight:
≈ 0,102 kg/m per rib
Weight:
≈ 0,252 kg/m per rib
34
Section
Maximum production length: 8 500 mm La
Non standard lengths from 2540 mm La
Minimum order quantities for all sizes:
8 belts with 5 ribs or
10 belts with 4 ribs or
13 belts with 3 ribs or
20 belts with 2 ribs
or a multiple thereof
Weight:
≈ 0,693 kg/m per rib
Other sizes on request.
Standard Range
optibelt SUPER VX Variable Speed Belts – Raw Edge, Moulded Cogged –
DIN 7719/ISO 1604
Section/
Inside length
Li (mm)
ISODesignation
(Datum length) Ld
13 x 5
468
500
17 x 5
426
476
536
570
606
776
W
W
W
W
W
W
21 x 6
530
600
610
675
770
870
970
1220
W 20 560
W 20 630
W 20 640
W 20 710
W 20 800
W 20 900
W 20 1000
W 20 1250
22 x 8
485
525
565
650
700
750
800
850
900
950
1000
1060
1185
16
16
16
16
16
16
450
500
560
600
630
800
Section/
Inside length
Li (mm)
26 x 8
655
672
710
750
762
800
862
962
1082
28 x 8
600
650
700
750
800
850
900
950
1000
1060
1120
1180
1250
1320
1400
1450
1500
30 x 10
650
665
700
800
850
875
900
950
1000
1035
1050
1120
1200
1320
1340
1500
1600
ISODesignation
(Datum length) Ld
W 25 690
W 25 710
W 25 750
W 25 790
W 25 800
W 25 840
W 25 900
W 25 1000
W 25 1120
Section/
Inside length
Li (mm)
ISODesignation
(Datum length) Ld
32 x 10
750
790
820
850
900
950
1000
1073
1120
1180
1200
1353
W 31,5 800
W 31,5 840
W 31,5 870
W 31,5 900
W 31,5 950
W 31,5 1000
W 31,5 1050
W 31,5 1120
W 31,5 1170
W 31,5 1230
W 31,5 1250
W 31,5 1400
37 x 10
660
800
850
900
950
1000
1020
1060
1120
1180
1250
1320
1400
1500
1600
1700
1800
41 x 13
925
1000
1040
1060
1120
1180
1190
1250
1340
1440
1600
1740
1940
Section/
Inside length
Li (mm)
52 x 16
1180
1250
1325
1400
1525
1600
1725
1925
2165
2240
Section/
Inside length
Li (mm)
ISODesignation
(Datum length) Ld
70 x 18
1600
1700
1800
1900
2000
2240
2500
47 x 13
1000
1060
1120
1180
1250
1320
1400
1500
1600
1700
1800
W
W
W
W
W
W
W
W
W
W
50
50
50
50
50
50
50
50
50
50
1250
1320
1400
1480
1600
1680
1800
2000
2240
2320
55 x 16
1400
1500
1600
1700
1800
W 40 990
W 40 1060
W 40 1100
W 40 1120
W 40 1180
W 40 1240
W 40 1250
W 40 1310
W 40 1400
W 40 1500
W 40 1660
W 40 1800
W 40 2000
65 x 20
1706
1906
Standard production data
Belt lengths up to 5000 mm
Belt top widths up to 100 mm
Belt thicknesses 5 to 25 mm
24° angle for sections 13 x 5; 17 x 5.
30° angle for sections 52 x 16; 55 x 16; 65 x 20 and 70 x 18.
27° angle for all other sections. Sizes in accordance with USA Standard RMA/MTPA and variable speed
belts with angles of 22° to 42° can be supplied on request. Minimum order quantities are necessary.
Other sizes and double cogged variable speed belts can be supplied on request.
ISODesignation
(Datum length) Ld
W 63 1800
W 63 2000
Tolerances
Length ± 1 % of the nominal belt length
Angle ± 1.5° of the nominal angle
Height ≤ 8 mm
= ± 0.8 mm
> 8 to 20 mm = ± 1.0 mm
> 20 mm
= ± 1.5 mm
Width ± 0.75 mm
35
Standard Range
optibelt SUPER VX Variable Speed Belts – Raw Edge, Moulded Cogged –
According to USA-Standard RMA/MPTA
RMA/MPTA designation
1422
1422
1422
1422
1422
V
V
V
V
V
235
240
270
290
300
1422
1422
1422
1422
1422
V
V
V
V
V
330
340
360
400
420
1422
1422
1422
1422
1422
V
V
V
V
V
440
460
470
480
540
2230
2230
2230
2230
2230
V
V
V
V
V
266
273
275
326
375
1422 V 600
1422 V 660
2322
2322
2322
2322
2322
V
V
V
V
V
329
347
364
396
421
2322
2322
2322
2322
2322
V
V
V
V
V
434
441
461
481
486
2322
2322
2322
2322
2322
V
V
V
V
V
521
541
601
661
681
1430 V 215
36
RMA/MPTA designation
1922
1922
1922
1922
1922
V
V
V
V
V
277
282
298
321
332
1922
1922
1922
1922
1922
V
V
V
V
V
338
363
381
386
403
1922
1922
1922
1922
1922
V
V
V
V
V
426
443
454
460
484
1922
1922
1922
1922
1922
V
V
V
V
V
526
544
604
630
646
1922
1922
1922
1922
1922
V
V
V
V
V
666
686
706
721
726
RMA/MPTA designation
1922 V 751
1922 V 756
2530 V 934
2530 V 990
1926
1926
1926
1926
1926
2830
2830
2830
2830
2830
V
V
V
V
V
250
275
290
407
415
1926 V 427
2322 V 701
2322 V 801
2426 V 353
2426 V 363
2530
2530
2530
2530
2530
V
V
V
V
V
500
530
560
600
630
2530
2530
2530
2530
2530
V
V
V
V
V
670
710
750
790
800
V
V
V
V
V
337
363
366
367
393
2830 V 396
2830 V 422
RMA/MPTA designation
3230
3230
3230
3230
3230
V
V
V
V
V
630
670
710
723
750
3230 V 800
3230 V 850
3432
3432
3432
3432
3432
V
V
V
V
V
450
456
480
528
534
2926
2926
2926
2926
2926
2926
V
V
V
V
V
V
471
486
521
546
574
586
2926
2926
2926
2926
2926
V
V
V
V
V
606
616
636
646
666
4430
4430
4430
4430
4430
V
V
V
V
V
530
548
555
560
570
2926
2926
2926
2926
2926
V
V
V
V
V
686
726
750
776
786
4430
4430
4430
4430
4430
V
V
V
V
V
578
600
610
630
652
3226
3226
3226
3226
3226
V
V
V
V
V
392
400
433
450
505
4430
4430
4430
4430
4430
V
V
V
V
V
660
670
690
700
710
3226
3226
3226
3226
3226
V
V
V
V
V
545
585
603
650
663
4430
4430
4430
4430
4430
V
V
V
V
V
730
750
790
800
850
4436
4436
4436
4436
4436
V
V
V
V
V
525
551
561
576
646
3226 V 723
3226 V 783
3226 V 843
3230
3230
3230
3230
3230
Standard products – minimum order quantity on request.
V
V
V
V
V
419
528
560
585
600
4036 V 541
4036 V 574
4436 V 750
Other sizes and double cogged variable speed belts on request.
Standard Range
optibelt DK Double Section V-Belts to DIN/ISO, ASAE
AA/HAA
BB/HBB
CC/HCC
Section AA/HAA
Reference length
(mm)
DD/HDD
Section BB/HBB
Reference length
(mm)
Belt No.
Belt No.
Reference length
(mm)
22 x 22
Section CC/HCC
Belt No.
Reference length
(mm)
Belt No.
2000
2032
2370
2500
2650
77
78
91
96
102
1980
2180
2300
2370
2500
75
83
88
90
95
3750
4010
4040
4200
4470
145
155
156
162
173
2280
2500
2800
3200
3310
86
94
106
122
126
2667
2800
3300
3920
103
108
128
152
2540
2600
2650
2740
2800
97
99
101
105
107
4500
4750
5000
5639
6900
174
184
194
221
270
3765
4000
4216
4300
4500
144
153
162
165
173
2850
2900
2920
3000
3030
109
111
112
115
116
5000
5300
5340
5750
193
204
206
224
3150
3250
3280
3325
3390
121
125
126
128
131
3450
3500
3550
3658
3730
133
135
137
141
144
Weight: ≈ 0,150 kg/m
Weight: ≈ 0,250 kg/m
Non standard lengths and special constructions from:
Section
Section
Section
Section
Section
Section
AA/HAA 1350
BB/HBB 1350
CC/HCC 1600
DD/HDD 3000
22 x 22 3000
25 x 22 1600
to
to
to
to
to
to
28 000
28 000
28 000
10 000
10 000
28 000
Minimum order quantity for
special lengths on request.
mm
mm
mm
mm
mm
mm
25 x 22
Section DD/HDD
Reference length
(mm)
Belt No.
upon request
Weight: ≈ 0,935 kg/m
Section 22 x 22
5180
5220
5850
6270
Weight: ≈ 0,511 kg/m
Section 25 x 22
upon request
Weight: ≈ 0,440 kg/m
Weight: ≈ 0,625 kg/m
Conversion factors from the belt number to the reference length:
Section AA/HAA – Belt No. x 25,4 = mm + 53 mm
Section BB/HBB – (up to Belt No. 210)
Belt No. x 25,4 = mm + 74 mm
(over Belt No. 210)
Belt No. x 25,4 = mm + 36 mm
Section CC/HCC – (up to Belt No. 210)
Belt No. x 25,4 = mm + 107 mm
(over Belt No. 210)
Belt No. x 25,4 = mm + 56 mm
Section DD/HDD – (up to Belt No. 210)
Belt No. x 25,4 = mm + 132 mm
(over Belt No. 210)
Belt No. x 25,4 = mm + 69 mm
37
Standard Range
optibelt KS V-Grooved Pulleys – optibelt TB Taper Bushes
optibelt RE Variable Speed Pulleys
Optibelt KS V-Grooved Pulleys
Optibelt RE Variable Speed Pulleys
Optibelt-KS V-Grooved Pulleys are available in pilot bored and for
taper bush versions for all common belt sections.
Optibelt-RE Variable Speed Pulleys allow for a multi-stage speed
change between driving and driven pulley. They can be used with
classical as well as variable speed belts.
Optibelt TB Taper Bushes
Optibelt TB Taper Bushes are used for simple installations of pulleys
on shafts with or without keyway.
38
Standard Range
optibelt KS V-Grooved Pulleys, Types
Type 1
Type 2
Type 7
Type 3
Type 8
Type 4
Type 9
Type 5
Type 10
Type 6
Type 11
Rights to technical modifications reserved
Balancing
V-grooved pulleys are statically balanced in accordance with the
guidelines in VDI 2060, as standard:
Quality level Q 16; for dia. dd ≥ 400 mm at n = 1500 r.p.m.; for
dia. dd > 400 mm at v = 30 m/s.
The pulleys are balanced without keys on smooth balancing
spindles. Machines whose runners are balanced with a keyway
entered in the end of the shaft have to be ordered with the following
remark: “Balanced with pilot bore and empty key on smooth
balancing spindles without fitted keyway.”
Balancing in one plane to quality level Q 6.3 on request.
We recommend balancing in two planes to quality level Q 6.3, or
finer, when v ≥ > 30 m/s or the ratio or datum diameter to face
width dd: b2 is < 4 at v > 20 m/s.
In such cases, the pulley operational speed must be stated.
Special pulleys and custom designed pulleys on request
39
Standard Range
Pulleys – Standards – Design Criteria – Types
solid pulley
plate pulley
An essential component in V-belt drive systems is the V-belt pulley,
or V- pulley as it is usually termed. These pulleys are predominantly
made from GG 20 cast iron and are available pilot bored, finished
bored or with a taper bush.
The British and DIN Standards are based on the ISO Standard as
are the standards of all industrialised countries.
ISO 4183 Grooved Pulleys for Classical V-Belts and
Wedge Belts.
V-belt pulleys with grooves for wedge belts to BS 3790:1981 and
DIN 7753 Part 1 are also suitable for classical V-belts with the same
datum width bd to BS 3790:1981 and DIN 2215. These are known
as dual duty pulleys.
Belt
Top width
Datum width
Belt height/
groove depth
● Balancing in two planes (dynamically), quality level Q 6.3,
becomes necessary if:
v > 30 m/s or
the ratio of datum diameter to pulley face width dd:b2 is < 4 at
v > 20 m/s.
Note: The timely replacement of pulleys damaged by corrosion
or erosion prevents premature failure of the belts.
Furthermore, it is essential that the belts should never run with their
inside circumference in contact with the bottom of the groove as this
can quickly lead to damage and premature failure (Exception:
special drives such as V-flat drives).
Deep Grooved Pulleys
Deep grooved pulleys are employed for special drive situations
such as,
Example
Section
spoked pulley
Groove
SPZ
Z/10
SPZ – Z/10
bo ≈ 9,7
bo ≈ 10
b1 ≈ 9,7
bd = 8,5
h≈8
h≈6
bd = 8,5
tmin = 11
● the use of guide idlers
● twist drives or
● drives subject to severe vibration.
The increased groove top width ”b1” and depth ”t” of deep
grooved pulleys improves the running characteristics of the belt,
particularly as it enters the groove. Belt turnover and run out are
prevented.
Deep Grooved Pulleys are not suitable for use with
Kraftbands
The following should be observed in the selection of pulleys:
● Use standard pulley diameters.
If design considerations make this impossible, a standard
diameter should, as a minimum requirement, be chosen for the
largest pulley in the drive.
● Do not select a pulley smaller than the minimum recommended
size in the interest of belt service life and overall drive efficiency.
● If manufacturing your own pulleys, the overall shape and
machining must conform to the relevant Standards.
● Groove pulleys are generally balanced in one plane (statically),
to quality level Q 16 as in VDI 2060.
40
Standard Range
V-Grooved Pulleys DIN 2211 Page 1 for Wedge Belts and DIN 2217 Page 1
for Classical V-Belts
y
x =
Rz 25
y =
Rz 100
x
n
Break sharp
corners
y
y
n
Table 8
ISO
designation
–
Y*
–
Z*
A*
B*
–
C*
–
D
E
DIN 2215
designation
5
6
8
10
13
17
20
22
25
32
40
DIN 7753 Part 1
and ISO
designation
–
–
–
SPZ*
SPA*
SPB*
–
SPC*
–
–
–
bd
4.2
5.3
6.7
8.5
11.0
14.0
17.0
19.0
21.0
27.0
32.0
b1 ≈
5.0
6.3
8.0
9.7
12.7
16.3
20.0
22.0
25.0
32.0
40.0
c
1.3
1.6
2.0
2.0
2.8
3.5
5.1
4.8
6.3
8.1
12.0
V-belt
Section
Wedge
belt Section
e
6 ± 0.3 8 ± 0.3 10 ± 0.3 12 ± 0.3 15 ± 0.3 19 ± 0.4 23 ± 0.4 25.5 ± 0.5 29 ± 0.5 37 ± 0.6 44.5 ± 0.7
f
5 ± 0.5 6 ± 0.5
Endless belts
t
7 ± 0.6 8 ± 0.6 10 ± 0.6 12.5 ± 0.8 15 ± 0.8 17 ± 1.0 19 ± 1.0 24 ± 2.0 29 ± 2.0
6 + 0.6 7 + 0.6 9 + 0.6 11 + 0.6 14 + 0.6 18 + 0,6
0
0
0
0
0
0
Open ended V-belting
DIN 2216
V-Belts
dd min
Wedge belts
20
28
40
50
71
112
160
180
250
355
500
–
–
–
63
90
140
–
224
–
–
–
–
–
–
–
–
–
–
–
–
–
32° ± 1° 32° ± 1° 32° ± 1°
dd ≤ 50 dd ≤ 63 dd ≤ 75
–
α
Face width for z
number of grooves
b2 = (z – 1) e + 2 f
–
–
36° ± 1° 36° ± 1° 36° ± 1°
dd > 50 dd > 63 dd > 75
1
2
3
4
5
6
7
8
9
10
11
12
18 + 0.6
22 + 0.6 28 + 0.6 33 + 0.6
0
0
0
0
24 + 0.6
0
0.6
0.6
0.6
21 +
26 +
33 +
38 + 0.6
0
0
0
0
–
–
–
10.0
16.0
22.0
28.0
34.0
40.0
12.0
20.0
28.0
36.0
44.0
52.0
60.0
14.0
24.0
34.0
44.0
54.0
64.0
74.0
84.0
∗ These V-pulleys also accept Optibelt Super TX M=S V-belts.
34° ± 1° 34° ± 1° 34° ± 1° 34° ± 1° 34° ± 1° 34° ± 1°
dd ≤ 80 dd ≤ 118 dd ≤ 190 dd ≤ 250 dd ≤ 315 dd ≤ 355
–
–
–
–
–
–
36° ± 30‘ 36° ± 30‘
dd ≤ 500 dd ≤ 630
38° ± 1° 38° ± 1° 38° ± 1° 38° ± 1° 38° ± 30‘ 38° ± 30‘ 38° ± 30‘ 38° ± 30‘
dd > 80 dd > 118 dd > 190 dd > 250 dd > 315 dd > 355 dd > 500 dd > 630
16.0
28.0
40.0
52.0
64.0
76.0
88.0
100.0
112.0
(Figures in mm)
20.0
35.0
50.0
65.0
80.0
95.0
110.0
125.0
140.0
155.0
25.0
44.0
63.0
82.0
101.0
120.0
139.0
158.0
177.0
196.0
215.0
30.0
53.0
76.0
99.0
122.0
145.0
168.0
191.0
214.0
237.0
260.0
283.0
34.0
59.5
85.0
110.5
136.0
161.5
187.0
212.5
238.0
263.5
289.0
314.5
38.0
67.0
96.0
125.0
154.0
183.0
212.0
241.0
270.0
299.0
328.0
357.0
48.0
85.0
122.0
159.0
196.0
233.0
270.0
307.0
344.0
381.0
418.0
455.0
58.0
102.5
147.0
191.5
236.0
280.5
325.0
369.5
414.0
458.5
503.0
547.5
41
Standard Range
V-Grooved Pulleys DIN 2211 Page 1 for Wedge Belts
and DIN 2217 Page 1 for Classical V-Belts
Table 9
V-belt
section
Wedge
belt section
ISO
designation
–
Y
–
Z
A
B
–
C
–
D
E
DIN 2215
designation
5
6
8
10
13
17
20
22
25
32
40
DIN 7753 Part 1
and ISO 4184
designation
–
–
–
SPZ
SPA
SPB
–
SPC
–
–
–
20.0
22.0
25.0
28.0
31.5
35.5
40.0
28.0
31.5
35.5
40.0
40
45.0
50.0
56.0
63.0
45.0
50.0
56.0
63.0
45
50
56
63
71.0
71.0
71
80.0
80.0
80
90.0
90
100.0
100
112.0
112
125.0
125
140
160
180
Datum diameter dd
Admissible datum diameter
variations relative to one another
(mm)
200
0.3
40•■
45•■
50•■
56•■
63
67
71
75
80
85
90
95
100
106
■
63•
■
67•
■
71•
■
75•
■
80•
■
85•
90
95
100
106
112
118
125
132
140
150
160
112
118
125
132
140
150
160
170
180
190
200
212
224
250
170
180
190
200
212
224
225
236
250
170
180
190
200
212
224
225
236
250
265
280
300
315
280
300
315
280
355
355
400
400
280
300
315
335
355
375
400
425
450
450
450
450
500
560
630
500
560
630
500
560
630
710
710
800
900
1000
710
800
900
1000
0.4
■
90•
■
95•
■
100•
■
106•
■
112•
■
118•
■
125•
■
132•
140
150
160
160
180
200
224
250
315
355
Datum
diameter
dd
min
20.0
22.0
25.0
28.0
31.5
35.5
40.0
20.4
22.4
25.4
28.4
32.0
36.1
40.6
45.0
50.0
56.0
63.0
67.0
45.7
50.8
56.9
64.0
68.0
71.0
75.0
80.0
85.0
90.0
95.0
100.0
106.0
72.1
76.1
81.3
86.3
91.4
96.4
101.6
107.6
140•
150•
160•
112.0
118.0
125.0
132.0
140.0
150.0
160.0
113.8
119.9
127.0
134.1
142.2
152.4
162.6
0.3
■
180•
■
190•
■
200•
■
212•
224
225
236
250
265
170.0
180.0
190.0
200.0
212.0
224.0
225.0
236.0
250.0
265.0
172.7
182.9
193.0
203.2
215.4
227.6
228.6
239.8
254.0
269.0
0.4
280.0
300.0
315.0
335.0
355.0
375.0
400.0
425.0
284.5
304.8
320.0
340.0
360.7
380.7
406.4
431.4
0.5
457.2
482.2
508.0
569.0
640.1
0.6
250
280
300
315
335
355
375
400
425
280
315
0.2
355
355
400
400
450
450
500
560
630
450
475
500
560
630
500
560
630
500
560
630
500
560
630
450.0
475.0
500.0
560.0
630.0
710
800
900
1000
710
800
900
1000
710
800
900
1000
710
800
900
1000
710
800
900
1000
710.0
800.0
900.0
1000.0
721.4
812.8
914.4
1016.0
0.8
1120
1250
1400
1600
1120
1250
1400
1600
1120
1250
1400
1600
1120
1250
1400
1600
1120
1250
1400
1600
1120.0
1250.0
1400.0
1600.0
1137.9
1270.0
1422.4
1625.6
1.0
1800
2000
1800
2000
1800
2000
1800
2000
1800
2000
1800.0
2000.0
1828.8
2032.0
1.2
400
0.6
For further details see standard DIN 2211 Page 1 and DIN 2217 Page 1. These V-grooved pulleys also accept Optibelt Super TX M=S V-belts.
Figures in bold type are the preferred datum diameters. For classical V-belts only. For Optibelt Super TX M=S wedge belts.
42
max
Run out
and
side
wobble
tolerance
—
Standard Range
V-Grooved Pulleys USA Standard RMA/MPTA for Wedge Belts
y
x =
Rz 25
y =
Rz 100
x
n
Break sharp
edges
y
y
n
Table 10
Belt section USA Standard RMA/MPTA
3V/9N
5V/15N
8V/25N
b1
8.89 ± 0.13
15.24 ± 0.13
25.4 ± 0.13
e
10.30 ± 0.40
17.50 ± 0.40
28.6 ± 0.40
f
+ 2.00
9.00 – 1.00
+ 3.00
13.00 – 1.00
+ 6.00
19.0 – 2.00
tmin
8.6
15.0
25.1
da min
63
140
315
36° ± 25‘
da 63 to 90
—
—
38° ± 25’
da > 90 to 150
38° ± 25’
da 140 to 255
38° ± 25’
315 to 40
40° ± 25’
da > 150 to 305
40° ± 25’
da > 255 to 405
40° ± 25’
da >405 to 570
42° ± 25’
da > 305
42° ± 25’
da > 405
42° ± 25’
da > 570
α
Face width b2 for number of grooves z
b2 = (z – 1) e + 2 f
——
—
1
18.0
26.0
38.0
2
28.3
43.5
66.6
3
38.6
61.0
95.2
4
48.9
78.5
123.8
5
59.2
96.0
152.4
6
69.5
113.5
181.0
7
79.8
131.0
209.6
8
90.1
148.5
238.2
9
100.4
166.0
266.8
10
110.7
183.5
295.4
11
121.0
201.0
324.0
12
131.3
218.5
(Values in mm)
352.6
For drives with several grooves the total of all deviations from the nominal value e for all groove distances of a pulley +/- 0.8 mm must not be exceeded. For further details
see US-Standard RMA/MPTA.
Note:
The permissible variations of the V-grooved pulley according to US-Standard RMA/MPTA deviate only slightly from the values contained in ISO 5290 “Grooved pulleys
for joined narrow belts” (Kraftbands). Therefore Optibelt KB Krafbands can be used for V-grooved pulleys manufactured according to both standards.
These V-grooved pulleys are also used for Optibelt Super TX M=S V-belts.
43
Standard Range
V-Pulleys for Kraftbands
c
y
x =
Rz 25
y =
Rz 100
x
n
Break sharp
edges
y
y
n
Table 11: V-pulleys for Kraftbands with wedge belts according to ISO 5290
Section
da
α°
± 30
b1
≈’
δ h1max
δ h2max
tmin
e
3V/9J
67 to 90
> 90 to 150
> 150 to 300
> 300
36
38
40
42
8.9
0.20
0.30
8.9
10.3
± 0.25
5V/15J
180 to 250
> 250 to 400
> 400
38
40
42
15.2
0.25
0.40
15.2
17.5
8V/25J
315 to 400
> 400 to 560
> 560
38
40
42
25.4
0.30
0.50
25.4
28.6
Tol e1) Σ Tol e2)
fmin
da min
± 0.5
9
67
± 0.25
± 0.5
13
180
± 0.40
± 0.8
19
315
da
b1
δh2
The International Standard ISO 5290 specifies pulley groove
dimensions for belt sections 3V/9J, 5V/15J, 8V/25J. The groove
top width ‘b1’ is used as the basic reference dimension for
standardisation of the grooves and the joined V-belts. The pulley
groove and the joined V-belts are considered in the Standard ISO
5290 as a single unit.
The values of δ h1 and δ h2 were chosen to ensure that
1. the belt joining band does not come into contact with the outside
diameter of the pulley in order to avoid the belts separating from
the joining band,
2. the belts are still seated deep enough in the pulley grooves to
ensure full transmission of power.
δh1
For further details please see Standard ISO 5290.
1) Tolerance for the dimension ‘e’ between two adjacent grooves.
2) The sum of all deviations from the nominal dimension ‘e’ for all the groove spacings of a pulley must not exceed the tolerance shown.
b1 = effective width
da = effective outside diameter
The groove faces must be straight at least to the level of da - 2 δ h2.
Table 12: V-pulleys for Kraftbands with section SPZ, SPA, SPB and SPC according to DIN 2211/ ISO 4183
dd
α°
± 30’
SPZ
71 to 80
> 190
SPA
b1
≈
c
tmin
e
Tol e1)
Σ Tol e2)
34
38
9.7
2.0
11
12.0
± 0.3
± 0.6
8.0
71
100 to 118
> 80
34
38
12.7
2.8
14
15.0
± 0.3
± 0.6
10.0
100
SPB
160 to 190
> 190
34
38
16.3
3.5
18
19.0
± 0.4
± 0.8
12.5
160
SPC
250 to 315
> 315
34
38
22.0
4.8
24
25.5
± 0.40
± 0.8
17.0
250
Section
44
fmin
dd min
Standard Range
V-Pulleys for Kraftbands
Table 13: V-pulleys for Kraftbands with classical V-belts ISO 5291
Section
da
α°
± 30’
AJ/HA
80 to 125
> 125
34
38
BJ/HB
130 to 195
> 195
CJ/HC
DJ/HD
b1
δ h1max
δ h2max
c
tmin
e
13.0
0.20
0.35
1.5
12.0
34
38
16.5
0.25
0.40
2.0
210 to 325
> 325
34
38
22.4
0.30
0.45
370 to 490
> 490
36
38
32.8
0.30
0.55
≈
Tol e1) Σ Tol e2)
fmin
da min
15.88
± 0.3
± 0.6
9.0
80
14.0
19.05
± 0.4
± 0.8
11.5
130
3.0
19.0
25.40
± 0.5
± 1.0
16.0
210
4.5
26.0
36.53
± 0.6
± 1.2
23.0
370
1) Tolerance for the dimension ‘e’ between two adjacent grooves.
2) The sum of all deviations from the nominal dimension ‘e’ for all the groove spacings of a pulley must not exceed the tolerance shown.
Table 14: Pulley width for Kraftbands
Section
3V/9J
5V/15J 8V/25J
Number
of grooves
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
SPZ
SPA
SPB
SPC
Face width b2 for number of grooves z
28.30
38.60
48.90
59.20
69.50
79.80
90.10
100.40
110.70
121.00
131.30
141.60
151.90
162.20
172.50
182.80
193.10
203.40
213.70
224.00
234.30
244.60
254.90
265.20
275.50
285.80
296.10
306.40
316.70
327.00
337.30
347.60
357.90
368.20
378.50
388.80
399.10
409.40
419.70
43.50
61.00
78.50
96.00
113.50
131.00
148.50
166.00
183.50
201.00
218.50
236.00
253.50
271.00
288.50
306.00
323.50
341.00
358.50
376.00
393.50
411.00
428.50
446.00
463.50
481.00
498.50
516.00
533.50
551.00
568.50
586.00
603.50
621.00
638.50
656.00
673.50
691.00
708.50
For KB-sets observe systematic classification.
66.60
95.20
123.80
152.40
181.00
209.60
238.20
266.80
295.40
324.00
352.60
381.20
409.80
438.40
467.00
495.60
524.20
552.80
581.40
610.00
638.60
667.20
695.80
724.40
753.00
781.60
810.20
838.80
867.40
896.00
924.60
953.20
981.80
1010.40
1039.00
1067.60
1096.20
1124.80
1153.40
28.00
40.00
52.00
64.00
76.00
88.00
100.00
112.00
124.00
136.00
148.00
160.00
172.00
184.00
196.00
208.00
220.00
232.00
244.00
256.00
268.00
280.00
292.00
304.00
316.00
328.00
340.00
352.00
364.00
376.00
388.00
400.00
412.00
424.00
436.00
448.00
460.00
472.00
484.00
35.00
50.00
65.00
80.00
95.00
110.00
125.00
140.00
155.00
170.00
185.00
200.00
215.00
230.00
245.00
260.00
275.00
290.00
305.00
320.00
335.00
350.00
365.00
380.00
395.00
410.00
425.00
440.00
455.00
470.00
485.00
500.00
515.00
530.00
545.00
560.00
575.00
590.00
605.00
44.00
63.00
82.00
101.00
120.00
139.00
158.00
177.00
196.00
215.00
234.00
253.00
272.00
291.00
310.00
329.00
348.00
367.00
386.00
405.00
424.00
443.00
462.00
481.00
500.00
519.00
538.00
557.00
576.00
595.00
614.00
633.00
652.00
671.00
690.00
709.00
728.00
747.00
766.00
59.50
85.00
110.50
136.00
161.50
187.00
212.50
238.00
263.50
289.00
314.50
340.00
365.50
391.00
416.50
442.00
467.50
493.00
518.50
544.00
569.50
595.00
620.50
646.00
671.50
697.00
722.50
748.00
773.50
799.00
824.50
850.00
875.50
901.00
926.50
952.00
977.50
1003.00
1028.50
AJ/HA
BJ/HB
CJ/HC
DJ/HD
57.40
82.80
108.20
133.60
159.00
184.40
209.80
235.20
260.60
286.00
311.40
336.80
362.20
387.60
413.00
438.40
463.80
489.20
514.60
540.00
565.40
590.80
616.20
641.60
667.00
692.40
717.80
743.20
768.60
794.00
819.40
844.80
870.20
895.60
921.00
946.40
971.80
997.20
1022.60
82.53
119.06
155.59
192.12
228.65
265.18
301.71
338.24
374.77
401.30
447.83
484.36
520.89
557.42
593.95
630.48
667.01
703.54
740.07
776.60
813.13
849.66
886.19
922.72
959.25
995.78
1032.31
1068.84
1105.37
1141.90
1178.43
1214.96
1251.49
1288.02
1324.55
1361.08
1397.61
1434.14
1470.67
b2 = (z – 1) e + 2 f
33.88
49.76
65.64
81.52
97.40
113.28
129.16
145.04
160.92
176.80
192.68
20856
224.44
240.32
256.20
272.08
287.96
303.84
319.72
335.60
351.48
367.36
383.24
399.12
415.00
430.88
446.76
462.64
478.52
494.40
510.28
526.16
542.04
557.92
573.80
589.68
605.56
621.44
637.32
42.05
61.10
80.15
99.20
118.25
137.30
156.35
175.40
194.45
213.50
232.55
251.60
270.65
289.70
308.75
327.80
346.85
365.90
384.95
404.00
423.05
442.10
461.15
480.20
499.25
518.30
537.35
556.40
575.45
594.50
613.55
632.60
651.65
670.70
689.75
708.80
727.85
746.90
765.95
45
Standard Range
Deep Grooved Pulleys
y
x =
Rz 25
y =
Rz 100
x
n
Break sharp
edges
y
y
n
Table 15
Section DIN 7753 Part 1/ISO designation
SPZ
SPA
SPB
SPC
For V-belts according to DIN 2215 and 2216
10
13
17
22
bd
8.5
11.0
14.0
19.0
α = 34°
11.0
15.0
18.9
26.3
α = 38°
11.3
15.4
19.5
27.3
c
4.0
6.5
8.0
12.0
e
14 ± 0.3
18 ± 0.3
23.0 ± 0.4
31 ± 0.5
f
8 ± 0.6
10 ± 0.6
12.5 ± 0.8
17 ± 1.0
13
18
22.5
31.5
34° ± 1°
dd 63 to 80
34° ± 1°
dd 90 to 118
34° ± 1°
dd 140 to 190
34° ± 30‘
dd 224 to 315
38° ± 1°
dd > 80
38° ± 1°
dd >118
38° ± 1°
dd > 190
38° ± 30‘
dd > 315
34° ± 1°
dd 50 to 80
34° ± 1°
dd 71 to 118
34° ± 1°
dd 112 to 190
34° ± 30‘
dd 180 to 315
38° ± 1°
dd > 80
38° ± 1°
dd >118
38° ± 1°
dd > 190
38° ± 30‘
dd > 315
b1 ≈
tmin
α
for datum diameter dd
for wedge belts
DIN 7753 Part 1
α
for datum diameter dd
with classical V-belts
according to DIN 2215
Face width b2 for number of grooves z
b2 = (z – 1) e + 2 f
1
16
20
25
34
2
29
37
47
64
3
42
54
69
94
4
55
71
91
124
5
68
88
113
154
6
81
105
135
184
7
94
122
157
214
8
107
139
179
244
9
120
156
201
274
10
133
173
223
304
11
146
190
245
334
12
159
207
267
364
Please note the minimum pulley diameters, page 11.
Warning: Do not use Kraftbands in deep grooved pulleys.
46
Standard Range
optibelt KS V-Grooved Pulleys for Taper Bushes – Grooves to DIN 2211
Section SPZ/10
Datum
diameter
dd
(mm)
No.
of
grooves
Type
Weight
without
bush
(≈ kg)
Taper
bush
50▲
1
2
●
●
11
11
0.30
0.40
1008
1008
56▲
1
2
●
●
11
11
0.40
0.50
1008
1108
60▲
1
2
●
●
8
11
0.20
0.60
1008
1108
63
1
2
3
●
●
●
8
6
6
0.20
0.30
0.40
1108
1108
1108
67
1
2
3
●
●
●
8
6
6
0.30
0.40
0.50
1108
1108
1108
71
1
2
3
●
●
●
8
6
6
0.30
0.40
0.60
1108
1108
1108
75
1
2
3
●
●
●
8
6
6
0.40
0.40
0.50
1108
1210
1210
80
1
2
3
4
●
●
●
●
8
6
6
6
0.50
0.60
0.70
0.80
1210
1210
1210
1210
85
1
2
3
4
5
●
●
●
●
●
8
6
6
6
6
0.60
0.50
0.60
0.90
1.00
1210
1610
1610
1610
1610
90
1
2
3
4
5
●
●
●
●
●
8
6
6
6
6
0.70
0.70
0.80
1.00
1.20
1210
1610
1610
1610
1610
1
2
3
4
5
●
●
●
●
●
8
6
6
6
6
0.70
0.80
0.90
1.10
1.30
1210
1610
1610
1610
1610
1
2
3
4
5
6*
●
●
●
●
●
●
8
6
6
6
6
6
0.80
0.90
1.10
1.10
1.30
1.40
1210
1610
1610
1610
2012
2012
95
100
▲
Datum
diameter
dd
(mm)
No.
of
grooves
Taper
bush
1
2
3
4
5
6*
●
●
●
●
●
●
8
6
6
6
6
6
0.9
1.1
1.3
1.3
1.5
1.6
1610
1610
1610
1610
2012
2012
112
1
2
3
4
5
6*
●
●
●
●
●
●
8
6
6
6
6
6
1.0
1.3
1.3
1.5
1.8
1.9
1610
1610
2012
2012
2012
2012
118
1
2
3
4
5
6*
●
●
●
●
●
●
8
6
6
6
6
6
0.9
1.3
1.6
1.8
1.8
2.0
1610
1610
2012
2012
2012
2517
125
1
2
3
4
5
6*
●
●
●
●
●
●
8
6
2
2
6
6
1.0
1.4
1.8
2.2
2.3
2.5
1610
1610
2012
2012
2012
2517
132
1
2
3
4
5
6*
●
●
●
●
●
●
8
6
2
2
6
6
1.1
1.5
2.3
2.5
2.7
2.9
1610
1610
2012
2012
2517
2517
140
1
2
3
4
5
6*
8*
●
●
●
●
●
●
●
8
2
2
2
2
2
4
1.2
1.7
2.6
2.9
3.2
3.5
4.0
1610
1610
2012
2012
2517
2517
2517
150
1
2
3
4
5
6*
8*
●
●
●
●
●
●
●
8
8
2
2
2
2
4
1.2
2.0
3.1
3.7
4.0
4.4
5.1
1610
2012
2012
2517
2517
2517
2517
for Section 10 only
2
3
4
5
6
8
16
28
40
52
64
76
100
Taper bush
1008
1108
1210
1610
2012
2517
3020
Bore d2 (mm) from ... to ...
10-25
10-28
11-32
14-42
14-50
16-60
25-75
Face width b2 (mm)
Weight
without
bush
(≈ kg)
106
1
No. of grooves z
Type
● Solid pulley
O Plate pulley (with or without lightening holes)
✕ Spoked pulley
Material: EN-GJL 200 (GG 20)
DIN 1691
* Non stock item
Bore diameter d2 see page 65
47
Standard Range
optibelt KS V-Grooved Pulleys for Taper Bushes – Grooves to DIN 2211
Section SPZ/10
Datum
diameter
dd
(mm)
No.
of
grooves
Weight
without
bush
(≈ kg)
Type
Datum
diameter
dd
(mm)
Taper
bush
No.
of
grooves
Weight
without
bush
(≈ kg)
Taper
bush
160
1
2
3
4
5
6*
8*
●
●
●
●
●
●
●
8
8
2
2
2
2
4
1.3
2.5
3.6
4.4
4.8
5.2
5.6
1610
2012
2012
2517
2517
2517
2517
280
1
2
3
4
5
6*
8*
x
x
x
x
x
x
x
7
7
7
10
10
10
10
2.9
4.0
5.3
6.4
7.1
7.8
10.8
2012
2012
2517
2517
2517
2517
3020
170
1
2
3
4
5
6*
●
●
O
●
●
●
8
8
9
2
2
2
1.5
2.5
4.2
5.3
5.9
6.5
1610
2012
2012
2517
2517
2517
315
1
2
3
4
5
6*
x
x
x
x
x
x
7
7
7
10
10
10
3.1
4.2
6.1
7.6
8.6
9.3
2012
2012
2517
2517
2517
2517
180
1
2
3
4
5
6*
8*
●
●
O
O
O
O
●
8
8
9
9
9
9
4
1.6
2.5
4.8
6.1
6.3
6.8
7.1
1610
2012
2012
2517
2517
2517
3020
355
1
2
3
4
5
6*
8*
x
x
x
x
x
x
x
7
7
7
10
10
10
10
3.5
5.1
7.3
8.9
10.0
10.7
16.0
2012
2012
2517
2517
2517
2517
3030
190
1
2
3
4
5
6*
●
●
O
O
O
O
8
8
9
9
9
9
1.8
2.6
4.9
5.3
6.3
6.9
1610
2012
2012
2517
2517
2517
400
200
1
2
3
4
5
6*
8*
●
●
O
O
O
O
●
8
8
9
9
9
9
4
2.3
2.8
3.5
4.7
5.5
6.1
9.3
2012
2012
2012
2517
2517
2517
3020
1
2
3
4
5
6*
8*
x
x
x
x
x
x
x
7
7
7
10
10
10
10
6.0
6.3
8.0
10.1
11.7
14.5
18.2
2012
2517
2517
2517
3020
3020
3030
450
224
1
2
3
4
5
6*
8*
O
O
O
O
O
O
●
5
5
9
9
9
9
4
2.5
3.2
3.9
5.2
6.0
6.6
11.8
2012
2012
2012
2517
2517
2517
3020
1
2
3
4
5
6*
8*
x
x
x
x
x
x
x
7
7
7
10
10
10
10
6.1
8.2
9.8
11.8
13.9
16.9
24.0
2517
2517
2517
3020
3020
3030
3535
500
2
3
4
5
6*
x
x
x
x
x
7
7
10
10
10
9.1
11.4
14.3
17.6
19.9
2517
2517
3020
3020
3020
630
1
2
3
4
5
6
8*
x
x
x
x
x
x
x
7
7
10
10
10
10
10
2.8
3.5
4.3
5.7
7.0
7.0
10.5
2012
2012
2012
2517
2517
2517
3020
3
4
5
6*
x
x
x
x
7
10
10
7
15.9
20.0
22.7
33.6
2517
3020
3020
3535
250
No. of grooves z
Face width b2 (mm)
1
2
3
4
5
6
8
16
28
40
52
64
76
100
Taper bush
1610
2012
2517
3020
3030
3535
Bore d2 (mm) from ... to ...
14-42
14-50
16-60
25-75
35-75
35-90
48
Type
● Solid pulley
O Plate pulley (with or without lightening holes)
✕ Spoked pulley
Material: EN-GJL 200 (GG 20)
DIN 1691
* Non stock item
Bore diameter d2 see page 65
Standard Range
optibelt KS V-Grooved Pulleys for Taper Bushes – Grooves to DIN 2211
Section SPA/13
Datum
diameter
dd
(mm)
No.
of
grooves
Type
Weight
without
bush
(≈ kg)
Taper
bush
Taper
bush
8
6
2
2
2
1.20
1.40
1.80
2.00
2.40
1610
1610
2012
2012
2012
125
1
2
3
4
5
●
●
●
●
●
8
2
2
2
2
1.40
1.70
2.00
2.50
2.70
1610
1610
2012
2012
2012
132
1
2
3
4
5
●
●
●
●
●
8
2
2
2
2
1.60
1.80
2.30
2.60
2.90
1610
2012
2012
2517
2517
140
1
2
3
4
5
●
●
●
●
●
8
2
2
2
2
1.8
2.0
2.8
3.1
3.4
1610
2012
2517
2517
2517
150
1
2
3
4
5
●
●
●
●
●
8
2
2
2
2
1.4
2.4
3.5
3.8
4.2
1610
2012
2517
2517
2517
1610
1610
1610
1610
1610
160
1
2
3
4
5
O
●
●
●
●
5
2
2
2
2
1.9
2.9
3.9
4.4
5.1
1610
2012
2517
2517
2517
0.90
1.10
1.40
2.00
2.00
1610
1610
1610
2012
2012
170
1
2
3
4
5
O
●
●
●
●
5
2
2
2
2
2.0
3.1
4.6
5.5
5.9
1610
2012
2517
2517
3020
1.00
1.20
1.30
1.90
2.10
1610
1610
2012
2012
2012
180
1
2
3
4
5
O
O
●
●
●
5
9
2
2
2
2.1
3.4
5.1
5.9
6.2
1610
2012
2517
2517
3020
190
1
2
3
4
5
O
O
●
●
●
5
9
2
2
2
2.3
3.8
5.4
6.8
7.4
1610
2012
2517
2517
3020
11
11
0.60
0.80
1108
1108
67▲
1
2
●
●
8
6
0.30
0.50
1108
1108
71▲
1
2
3
●
●
●
8
6
6
0.30
0.50
0.70
1108
1108
1108
75▲
1
2
3
●
●
●
8
6
6
0.40
0.60
0.80
1108
1108
1108
80▲
1
2
3
●
●
●
8
6
6
0.50
0.60
0.90
1210
1210
1210
85▲
1
2
3
●
●
●
8
6
6
0.60
0.70
1.00
1210
1210
1210
1
2
3
4
●
●
●
●
8
6
6
6
0.70
0.70
1.00
1.20
1210
1610
1610
1615
95
1
2
3
4
●
●
●
●
8
6
6
6
0.80
0.90
1.10
1.40
1210
1610
1610
1615
100
1
2
3
4
5
●
●
●
●
●
8
6
2
2
6
0.80
0.90
1.20
1.70
1.90
106
1
2
3
4
5
●
●
●
●
●
8
6
2
6
6
112
1
2
3
4
5
●
●
●
●
●
8
6
6
6
6
Face width b2 (mm)
Weight
without
bush
(≈ kg)
●
●
●
●
●
●
●
No. of grooves z
Type
1
2
3
4
5
1
2
▲
No.
of
grooves
118
63▲
90
Datum
diameter
dd
(mm)
for Section 13 only
1
2
3
4
5
20
35
50
65
80
Taper bush
1108
1210
1610
1615
2012
2517
3020
Bore d2 (mm) from ... to ...
10-28
11-32
14-42
14-42
14-50
16-60
25-75
● Solid pulley
O Plate pulley (with or without lightening holes)
✕ Spoked pulley
Material: EN-GJL 200 (GG 20)
DIN 1691
Bore diameter d2 see page 65
49
Standard Range
optibelt KS V-Grooved Pulleys for Taper Bushes – Grooves to DIN 2211
Section SPA/13
Datum
diameter
dd
(mm)
No.
of
grooves
Type
Weight
without
bush
(≈ kg)
Taper
bush
Datum
diameter
dd
(mm)
No.
of
grooves
Weight
without
bush
(≈ kg)
Taper
bush
200
1
2
3
4
5
O
O
O
●
●
5
5
9
2
4
2.6
4.1
4.9
7.4
8.4
2012
2517
2517
3020
3020
450
1
2
3
4
5
x
x
x
x
x
7
7
7
10
7
7.0
10.3
14.1
15.5
24.3
2012
2517
3020
3020
3535
212
1
2
3
4
5
O
O
O
●
●
5
5
9
2
2
2.7
4.3
5.2
7.3
8.2
2012
2517
2517
3020
3020
500
1
2
3
4
5
x
x
x
x
x
7
7
7
10
7
8.0
11.6
16.0
18.2
27.3
2517
2517
3020
3020
3535
224
1
2
3
4
5
x
O
O
●
●
7
5
9
2
2
2.7
4.4
5.5
7.4
8.3
2012
2517
2517
3020
3020
560
1
2
3
4
5
x
x
x
x
x
7
7
7
7
7
11.6
15.5
17.8
26.7
30.4
2517
3020
3020
3535
3535
236
1
2
3
4
5
x
O
O
●
●
7
5
9
2
2
2.8
4.6
5.7
7.8
8.7
2012
2517
2517
3020
3020
630
1
2
3
4
5
x
x
x
x
x
7
7
7
7
7
10.1
16.0
22.0
30.8
33.7
2517
3020
3020
3535
3535
250
1
2
3
4
5
x
x
O
O
O
7
7
9
9
9
2.9
4.8
5.9
8.0
9.0
2012
2517
2517
3020
3020
280
1
2
3
4
5
x
x
O
O
O
7
7
9
9
5
3.3
5.4
6.7
8.8
15.5
2012
2517
2517
3020
3535
315
1
2
3
4
5
x
x
O
O
O
7
7
5
9
5
3.6
6.0
8.3
9.7
17.0
2012
2517
3020
3020
3535
355
1
2
3
4
5
x
x
x
x
x
7
7
7
10
7
4.2
6.7
9.2
11.0
18.6
2012
2517
3020
3020
3535
400
1
2
3
4
5
x
x
x
x
x
7
7
7
10
7
4.9
8.1
11.0
12.8
21.0
2012
2517
3020
3020
3535
1
2
3
4
5
Face width b2 (mm)
20
35
50
65
80
Taper bush
2012
2517
3020
3535
Bore d2 (mm) from ... to ...
14-50
16-60
25-75
35-90
No. of grooves z
50
Type
● Solid pulley
O Plate pulley (with or without lightening holes)
✕ Spoked pulley
Material: EN-GJL 200 (GG 20)
DIN 1691
Bore diameter d2 see page 65
Standard Range
optibelt KS V-Grooved Pulleys for Taper Bushes – Grooves to DIN 2211
Section SPB/17
Datum
diameter
dd
(mm)
No.
of
grooves
Type
Weight
without
bush
(≈ kg)
Taper
bush
Datum
diameter
dd
(mm)
100▲
1
2
3
●
●
●
1
6
6
0.9
1.2
1.7
1610
1610
1610
112▲
1
2
3
●
●
●
1
6
6
1.1
1.5
2.0
1610
1610
1610
118▲
1
2
3
●
●
●
1
6
6
1.3
1.7
2.3
1610
1610
1610
125▲
1
2
3
4
5
●
●
●
●
●
1
2
2
4
6
1.5
1.9
2.4
3.0
3.5
1610
2012
2012
2012
2012
132▲
1
2
3
4
5
●
●
●
●
●
1
2
2
4
4
1.8
2.2
2.8
3.4
3.7
1610
2012
2012
2012
2012
140
1
2
3
4
5
6
●
●
●
●
●
●
1
2
2
2
2
4
2.3
2.7
3.3
3.7
4.5
4.6
1610
2012
2012
2517
2517
2517
1
2
3
4
5
6
●
●
●
●
●
●
1
2
2
2
4
4
2.7
3.1
3.9
4.4
5.2
5.6
1610
2012
2517
2517
2517
2517
1
2
3
4
5
6
●
●
●
●
●
●
1
2
2
4
4
4
2.5
2.9
4.2
4.9
6.0
5.4
1610
2012
2517
2517
2517
3020
1
2
3
4
5
6
8
●
●
●
●
●
●
●
1
2
2
4
4
4
4
2.9
3.3
4.9
5.7
6.1
6.5
8.0
1610
2012
2517
2517
3020
3020
3020
150
160
170
▲
No.
of
grooves
Weight
without
bush
(≈ kg)
Taper
bush
180
1
2
3
4
5
6
8
●
●
●
●
●
●
●
1
8
2
4
4
4
4
4.1
4.5
5.5
6.9
7.1
7.7
9.5
1610
2517
2517
2517
3020
3020
3020
190
1
2
3
4
5
6
8
●
●
●
●
●
●
●
8
8
2
4
4
4
4
4.6
5.0
6.3
7.6
8.1
9.2
11.2
2012
2517
2517
2517
3020
3020
3030
200
1
2
3
4
5
6
8
●
●
●
●
●
●
●
8
8
2
2
2
4
4
5.0
5.4
6.5
8.8
9.1
10.3
13.5
2012
2517
2517
3020
3020
3020
3535
212
1
2
3
4
5
6
8
●
●
●
●
●
●
●
8
8
2
2
2
4
4
4.2
4.9
6.0
9.8
11.0
14.3
16.6
2012
2517
2517
3020
3020
3535
3535
224
1
2
3
4
5
6
8
10
●
●
●
●
●
●
●
●
8
8
2
2
2
4
4
4
4.7
5.3
6.3
11.3
12.7
17.0
19.3
21.8
2012
2517
2517
3020
3020
3535
3535
3535
236
1
2
3
4
5
6
8
10
●
●
x
x
●
●
●
●
8
8
10
10
6
4
4
4
5.0
5.5
7.0
14.5
16.9
20.0
22.3
25.3
2012
2517
2517
3020
3535
3535
3535
3535
for Section 17 only
1
2
3
4
5
6
8
10
Face width b2 (mm)
25
44
63
82
101
120
158
196
Taper bush
1610
2012
2517
3020
3030
3535
Bore d2 (mm) from ... to ...
14-42
14-50
16-60
25-75
35-75
35-90
No. of grooves z
Type
● Solid pulley
O Plate pulley (with or without lightening holes)
✕ Spoked pulley
Material: EN-GJL 200 (GG 20)
DIN 1691
Bore diameter d2 see page 65
51
Standard Range
optibelt KS V-Grooved Pulleys for Taper Bushes – Grooves to DIN 2211
Section SPB/17
Datum
diameter
dd
(mm)
No.
of
grooves
Type
Weight
without
bush
(≈ kg)
Taper
bush
Datum
diameter
dd
(mm)
250
1
2
3
4
5
6
8
10
●
x
●
●
●
●
●
●
8
7
2
2
2
4
4
4
5.4
5.5
7.7
19.6
21.7
23.3
27.5
29.3
2012
2517
3020
3020
3535
3535
3535
3535
265
2
3
4
6
8
●
O
O
O
O
7
9
9
9
9
6.2
8.0
9.5
16.7
24.0
2517
3020
3020
3525
3525
280
1
2
3
4
5
6
8
10
x
x
x
O
O
O
O
O
7
7
10
9
9
9
9
9
6.1
6.8
8.6
10.1
17.8
19.6
26.7
30.5
2012
2517
3020
3020
3535
3535
3535
3535
2
3
4
5
6
8
x
x
O
O
O
O
7
10
9
9
9
9
7.3
9.2
14.3
18.2
21.9
26.2
2517
3020
3020
3535
3535
3535
1
2
3
4
5
6
8
10
x
x
x
O
O
O
O
O
7
7
10
5
9
9
9
9
7.2
7.8
9.6
17.1
18.8
23.0
26.0
31.5
2012
2517
3020
3535
3535
3535
3535
3535
2
3
4
5
6
8
10*
x
x
x
x
x
x
x
7
10
7
10
10
10
10
7.8
10.5
18.3
19.5
22.0
28.2
36.0
2517
3020
3535
3535
3535
3535
4040
300
315
335
No.
of
grooves
x
x
x
x
O
x
x
7
10
7
10
9
10
10
8.7
10.8
18.6
20.8
22.8
27.0
38.0
3020
3020
3535
3535
3535
3535
4040
375
2
3
4
6
8
x
x
x
x
x
7
10
10
10
10
9.5
11.5
16.5
25.0
28.0
3020
3020
3525
3535
4040
400
2
3
4
5
6
8
10*
x
x
x
x
x
x
x
7
7
7
10
10
10
10
10.0
18.3
20.5
23.4
25.1
36.5
41.0
3020
3535
3535
3535
3535
4040
4040
425
2
3
4
6
8
x
x
x
x
x
7
7
10
10
10
11.5
18.0
19.5
25.1
52.5
3020
3535
3535
4040
4545
450
2
3
4
5
6
8
10*
x
x
x
x
x
x
x
7
7
7
10
10
10
10
12.1
21.9
24.5
27.3
35.5
40.9
53.5
3020
3535
3535
3535
4040
4040
4545
500
2
3
4
5
6
8
10*
x
x
x
x
x
x
x
7
7
7
10
10
10
10
13.2
23.1
26.6
29.9
38.9
45.5
61.0
3020
3535
3535
3535
4040
4040
4545
560
2
3
4
5
6
8
10*
x
x
x
x
x
x
x
7
7
7
7
10
10
10
16.5
25.9
29.0
35.3
43.1
49.0
55.7
3030
3535
3535
4040
4040
4545
4545
3
4
5
6
8
10
25
44
63
82
101
120
158
196
Taper bush
2012
2517
3020
3030
3535
Bore d2 (mm) from ... to ...
14-50
16-60
25-75
35-75
35-90
52
Taper
bush
2
3
4
5
6
8
10*
2
Face width b2 (mm)
Weight
without
bush
(≈ kg)
355
1
No. of grooves z
Type
4040
4545
40-100 55-110
● Solid pulley
O Plate pulley (with or without lightening holes)
✕ Spoked pulley
Material: EN-GJL 200 (GG 20)
DIN 1691
* Non stock item
Bore diameter d2 see page 65
Standard Range
optibelt KS V-Grooved Pulleys for Taper Bushes – Grooves to DIN 2211
Section SPB/17
Datum
diameter
dd
(mm)
No.
of
grooves
Type
Weight
without
bush
(≈ kg)
Taper
bush
630
2
3
4
5
6
8
10*
x
x
x
x
x
x
x
7
7
7
7
10
10
10
18.5
28.9
33.3
43.1
49.2
62.0
72.0
3020
3535
3535
4040
4040
4545
4545
710
3
4
5
6
8
10*
x
x
x
x
x
x
7
7
7
10
10
10
33.2
39.1
50.2
62.3
71.0
80.0
3535
3535
4040
4545
4545
4545
800
3
4
5
6
8
10*
x
x
x
x
x
x
7
7
7
10
10
10
36.7
48.8
56.1
71.4
90.9
102.0
3535
4040
4040
4545
4545
4545
900
3
4
5
6
8
10*
x
x
x
x
x
x
7
7
7
10
10
10
46.8
60.0
74.8
81.5
110.0
126.0
3535
4040
4545
4545
4545
5050
1000
3
4
5
6
8
10*
x
x
x
x
x
x
7
7
7
10
10
10
56.5
66.5
80.5
90.0
132.0
147.0
4040
4040
4545
4545
5050
5050
Datum
diameter
dd
(mm)
No.
of
grooves
2
3
4
5
6
8
10
Face width b2 (mm)
44
63
82
101
120
158
196
Taper bush
3030
3535
4040
4545
5050
Bore d2 (mm) from ... to ...
35-75
35-90
40-100
55-110
70-125
No. of grooves z
Type
Weight
without
bush
(≈ kg)
Taper
bush
● Solid pulley
O Plate pulley (with or without lightening holes)
✕ Spoked pulley
Material: EN-GJL 200 (GG 20)
DIN 1691
* Non stock item
Bore diameter d2 see page 65
53
Standard Range
optibelt KS V-Grooved Pulleys for Taper Bushes – Grooves to DIN 2211
Section SPC/22
Datum
diameter
dd
(mm)
No.
of
grooves
Type
Weight
without
bush
(≈ kg)
Taper
bush
200▲
3
4
5
6
●
●
●
●
4
4
4
4
9.0
10.5
14.0
17.0
2517
3020
3535
3535
212▲
3
4
5
6
●
●
●
●
4
4
4
4
10.0
12.5
15.0
18.0
3020
3020
3535
3535
2
3
4
5
6
8
●
●
●
●
●
●
4
4
4
4
4
4
8.1
11.0
14.0
16.2
19.0
24.9
3020
3020
3535
3535
3535
3535
3
4
5
6
8
●
●
●
●
●
4
4
4
4
4
12.0
17.2
19.1
20.8
25.5
3020
3535
3535
3535
3535
2
3
4
5
6
8
10*
●
●
●
●
●
●
●
4
4
4
4
4
4
4
9.8
14.5
20.7
22.8
26.0
29.7
34.0
3
4
5
6
8
●
O
O
O
O
8
9
9
9
9
3
4
5
6
8
10*
●
O
O
O
O
O
3
4
5
6
8
10*
O
O
O
O
●
O
224
236
250
265
280
300
▲
Datum
diameter
dd
(mm)
No.
of
grooves
O
O
O
O
●
O
5
9
9
9
4
9
21.6
24.6
29.0
31.4
50.0
58.0
3535
3535
3535
3535
4040
4545
335
3
4
5
6
8
O
O
O
O
O
5
9
9
9
9
22.5
26.5
30.0
35.0
58.0
3535
3535
3535
3535
4040
355
3
4
5
6
8
10*
O
O
O
O
O
O
5
9
9
9
9
9
22.9
28.3
32.5
36.0
67.5
121.0
3535
3535
3535
3535
4040
4545
375
3020
3020
3535
3535
3535
3535
4040
3
4
5
6
8
O
O
O
O
O
5
9
9
9
9
23.8
30.0
33.0
45.5
68.0
3535
3535
3535
4040
4545
400
21.2
24.0
26.2
29.0
33.3
3535
3535
3535
3535
3535
3
4
5
6
8
10*
x
x
x
O
O
O
7
10
10
9
9
9
24.1
28.0
34.0
48.0
65.0
88.0
3535
3535
3535
4040
4545
5050
425
8
9
9
9
9
9
24.0
29.0
31.0
33.8
37.5
45.0
3535
3535
3535
3535
3535
4040
3
4
5
6
8
x
x
O
O
O
7
10
9
9
9
26.0
31.0
45.0
58.0
74.0
3535
3535
4040
4545
4545
450
5
9
9
9
4
9
21.0
25.0
28.5
29.0
46.5
53.5
3535
3535
3535
3535
4040
4545
3
4
5
6
8
10*
x
x
x
O
O
O
7
10
10
9
9
9
28.6
33.5
45.0
61.1
78.7
101.0
3535
3535
4040
4545
5050
5050
475
3
4
5
6
8
x
x
x
O
O
7
10
10
9
9
40.0
47.0
47.2
62.8
81.5
3535
3535
4040
4545
5050
for Section 22 only
5
6
8
10
85
110,5
136
161,5
212,5
263,5
Taper bush
2517
3020
3535
4040
4545
5050
Bore d2 (mm) from ... to ...
16-60
25-75
35-90
40-100
55-110
70-125
54
Taper
bush
3
4
5
6
8
10*
4
Face width b2 (mm)
Weight
without
bush
(≈ kg)
315
3
No. of grooves z
Type
● Solid pulley
O Plate pulley (with or without lightening holes)
✕ Spoked pulley
Material: EN-GJL 200 (GG 20)
DIN 1691
* Non stock item
Bore diameter d2 see page 65
Standard Range
optibelt KS V-Grooved Pulleys for Taper Bushes – Grooves to DIN 2211
Section SPC/22
Datum
diameter
dd
(mm)
No.
of
grooves
Type
Weight
without
bush
(≈ kg)
Taper
bush
500
3
4
5
6
8
10*
x
x
x
x
O
O
7
10
10
10
9
9
30.9
39.0
48.7
60.2
87.4
127.0
3535
3535
4040
4545
5050
5050
560
3
4
5
6
8
10*
x
x
x
x
x
O
7
10
10
10
10
9
36.0
50.0
63.0
77.0
94.0
115.0
3535
4040
4545
5050
5050
5050
630
3
4
5
6
8
10*
x
x
x
x
x
O
7
7
10
10
10
9
48.5
61.0
77.0
86.0
105.5
130.0
4040
4545
5050
5050
5050
5050
710
3
4
5
6
8
10*
x
x
x
x
x
O
7
7
10
10
10
9
—
—
—
—
—
—
4040
4545
5050
5050
5050
5050
800
3
4
5
6
8
10*
x
x
x
x
x
O
7
7
10
10
10
9
—
—
—
—
—
—
4545
5050
5050
5050
5050
5050
1000
5
6
8
10*
x
x
x
O
10
10
10
9
—
—
—
—
5050
5050
5050
5050
1250
5
6
8
10*
x
x
x
O
10
10
10
9
—
—
—
—
5050
5050
5050
5050
No. of grooves z
Face width b2 (mm)
Datum
diameter
dd
(mm)
No.
of
grooves
3
4
5
6
8
10
85
110,5
136
161,5
212,5
263,5
Taper bush
3535
4040
4545
5050
Bore d2 (mm) from ... to ...
35-90
40-100
55-110
70-125
Type
Weight
without
bush
(≈ kg)
Taper
bush
● Solid pulley
O Plate pulley (with or without lightening holes)
✕ Spoked pulley
Material: EN-GJL 200 (GG 20)
DIN 1691
* Non stock item
Bore diameter d2 see page 65
55
Standard Range
optibelt KS V-Grooved Pulleys for Cylindrical Bore –
Grooves according to DIN 2211
Section SPZ/10
No.
of
grooves
Type
Weight
(≈ kg)
Finished
bore
dmax
(mm)
Distance
through hub
l
(mm)
Datum
diameter
dd
(mm)
No.
of
grooves
Type
Weight
(≈ kg)
Finished
bore
dmax
(mm)
Distance
through hub
l
(mm)
45▲
1
2
3
O
O
O
0.23
0.30
0.40
16
16
16
24
35
35
132
1
2
3
O
O
O
0.81
1.30
1.62
30
38
40
24
35
40
50▲
1
2
3
O
O
O
0.30
0.40
0.50
20
20
20
24
35
40
140
1
2
3
O
O
O
0.92
1.40
1.69
28
38
38
24
38
40
56▲
1
2
3
O
O
O
0.32
0.45
0.65
20
25
25
24
35
40
150
1
2
3
x
O
O
1.05
1.50
1.85
28
38
38
24
38
40
63
1
2
3
O
O
O
0.34
0.60
0.85
25
25
25
24
35
40
160
1
2
3
x
x
x
1.22
1.60
2.40
32
38
42
30
38
40
71
1
2
3
O
O
O
0.34
0.62
1.00
25
25
30
24
35
40
170
1
2
3
x
x
x
1.66
1.85
3.00
40
40
42
30
38
40
75
1
2
3
O
O
O
0.35
0.64
1.05
24
24
28
24
35
40
180
1
2
3
x
x
x
2.10
3.05
3.50
32
38
42
30
38
40
80
1
2
3
O
O
O
0.35
0.65
1.10
25
30
38
24
35
35
190
1
2
3
x
x
x
2.25
2.35
4.00
35
35
35
30
38
40
85
1
2
3
O
O
O
0.30
0.70
1.10
25
30
38
24
35
35
200
1
2
3
x
x
x
2.40
2.85
4.45
32
38
42
38
38
40
90
1
2
3
O
O
O
0.38
0.75
1.15
25
30
38
24
35
38
212
1
2
3
x
x
x
2.60
3.40
5.00
35
35
38
30
38
40
95
1
2
3
O
O
O
0.40
0.83
1.20
28
28
38
24
35
38
225
1
2
3
x
x
x
2.80
4.00
5.30
32
38
42
38
38
40
100
1
2
3
O
O
O
0.48
0.90
1.25
28
30
38
24
35
38
250
1
2
3
x
x
x
3.30
4.80
6.00
32
38
42
38
38
40
106
1
2
3
O
O
O
0.50
0.96
1.32
30
28
38
24
35
38
280
1
2
3
x
x
x
3.85
5.20
7.00
35
42
48
34
38
40
112
1
2
3
O
O
O
0.54
1.00
1.40
28
30
38
24
35
38
315
1
2
3
x
x
x
4.35
6.80
8.25
35
42
48
34
38
40
118
1
2
3
O
O
O
0.60
1.10
1.47
28
38
38
24
35
38
355
1
2
3
x
x
x
4.60
8.00
10.00
35
42
48
34
40
45
125
1
2
3
O
O
O
0.70
1.20
1.55
28
30
38
24
35
40
Datum
diameter
dd
(mm)
▲
No. of grooves z
Face width b2 (mm)
56
for Section 10 only
1
2
3
16
28
40
● Solid pulley
O Plate pulley (with or without lightening holes)
✕ Spoked pulley
Hub position: flush one side
Material: EN-GJL 200 (GG 20) - DIN 1691
Standard Range
optibelt KS V-Grooved Pulleys for Cylindrical Bore –
Grooves according to DIN 2211
Section SPA/13
No.
of
grooves
Type
Weight
(≈ kg)
Finished
bore
dmax
(mm)
Distance
through hub
l
(mm)
Datum
diameter
dd
(mm)
Type
Weight
(≈ kg)
Finished
bore
dmax
(mm)
Distance
through hub
l
(mm)
50▲
1
2
3
O
O
O
0.34
0.48
0.55
18
18
18
34
49
47
106
1
2
3
4h
5h
O
O
O
O
O
0.88
1.65
2.20
3.24
3.85
28
28
32
32
35
34
49
42
53
60
56▲
1
2
3
O
O
O
0.42
0.62
0.74
20
20
20
34
49
47
112
34
49
47
60
70
1
2
3
4h
5h
O
O
O
O
O
1.09
1.75
2.38
3.37
3.95
28
38
38
42
42
34
49
42
53
60
1
2
3
4h
5h
O
O
O
O
O
0.52
0.77
0.85
1.23
1.48
25
25
25
25
25
118
25
28
32
32
32
34
49
42
60
70
1
2
3
4h
5h
O
O
O
O
O
1.10
1.80
2.42
3.42
4.10
32
38
42
42
48
34
49
42
53
65
1
2
3
4h
5h
O
O
O
O
O
0.50
0.89
0.96
1.47
1.83
125
0.53
1.02
1.08
1.76
1.92
24
24
24
24
28
34
49
42
60
82
1
2
3
4h
5h
O
O
O
O
O
1.38
1.90
2.55
3.49
4.40
32
38
42
42
48
34
49
42
53
65
1
2
3
4h
5h
O
O
O
O
O
80▲
132
O
O
O
O
O
0.56
1.04
1.19
1.89
2.00
28
32
38
38
38
34
49
42
60
55
1
2
3
4h
5h
O
O
O
O
O
1.45
2.20
2.58
3.58
4.75
32
38
42
42
48
34
49
42
53
65
1
2
3
4h
5h
85
140
1
2
3
4h
5h
O
O
O
O
O
0.64
1.20
1.40
1.98
2.20
24
28
28
28
32
34
49
42
53
55
1
2
3
4h
5h
O
O
O
O
O
1.52
2.33
2.63
3.65
4.95
32
38
42
42
48
34
49
42
53
65
150
90
1
2
3
4h
5h
O
O
O
O
O
0.88
1.47
1.62
2.22
2.51
28
32
38
42
42
34
49
42
53
67
1
2
3
4h
5h
x
x
O
O
O
1.60
2.59
2.95
4.04
5.15
38
38
42
42
48
36
49
42
53
65
160
95
1
2
3
4h
5h
O
O
O
O
O
0.76
1.57
1.89
2.47
2.75
28
28
28
32
35
34
49
42
53
67
1
2
3
4h
5h
x
x
x
O
O
1.75
2.40
2.80
3.62
5.45
38
38
42
48
48
36
49
42
60
70
170
100
1
2
3
4h
5h
O
O
O
O
O
0.84
1.36
1.98
2.72
3.10
28
32
38
42
42
34
49
52
53
60
1
2
3
4h
5h
x
x
x
x
x
2.00
2.90
3.20
4.20
5.80
35
35
35
35
38
36
49
42
60
70
Datum
diameter
dd
(mm)
63▲
71▲
75▲
▲
No. of grooves z
Face width b2 (mm)
No.
of
grooves
h dd + 4 mm
for Section 13 only
1
2
3
4
5
20
35
50
65
80
● Solid pulley
O Plate pulley (with or without lightening holes)
✕ Spoked pulley
Hub position: flush one side
Material: GG 20 – DIN 1691
57
Standard Range
optibelt KS V-Grooved Pulleys for Cylindrical Bore –
Grooves according to DIN 2211
Section SPA/13
Datum
diameter
dd
(mm)
No.
of
grooves
Type
Weight
(≈ kg)
Finished
bore
dmax
(mm)
Distance
through hub
l
(mm)
Datum
diameter
dd
(mm)
No.
of
grooves
Weight
(≈ kg)
Finished
bore
dmax
(mm)
Distance
through hub
l
(mm)
180
1
2
3
4h
5h
x
x
x
x
x
2.02
3.15
3.60
4.65
6.13
38
42
42
48
48
36
49
42
60
70
315
1
2
3
4h
5h
x
x
x
x
x
4.78
6.60
8.75
11.80
12.50
48
48
55
55
60
44
53
47
60
70
190
1
2
3
4h
5h
x
x
x
x
x
2.02
3.20
4.00
5.24
6.31
38
42
42
48
48
36
49
42
60
70
355
1
2
3
4h
5h
x
x
x
x
x
5.50
7.70
9.55
11.80
12.85
48
55
55
55
60
44
53
47
60
70
200
1
2
3
4h
5h
x
x
x
x
x
2.40
2.85
4.21
4.95
6.45
38
42
48
55
60
36
49
42
60
70
400
1h
2h
3h
4h
5h
x
x
x
x
x
6.85
8.80
10.95
12.40
15.90
50
55
60
60
60
50
53
47
67
82
212
1
2
3
4h
5h
x
x
x
x
x
2.70
3.40
4.40
5.68
6.85
40
42
42
42
42
36
49
42
60
70
450
1h
2h
3h
4h
5h
x
x
x
x
x
7.50
9.40
12.15
14.20
18.30
55
55
60
65
65
50
53
47
67
82
225
1
2
3
4h
5h
x
x
x
x
x
2.75
3.87
4.60
6.50
7.25
40
42
42
42
42
36
49
42
60
70
500
1h
2h
3h
4h
5h
x
x
x
x
x
10.50
10.70
13.45
16.25
22.80
55
55
60
65
65
50
55
60
67
82
236
1
2
3
4h
5h
x
x
x
x
x
3.30
4.10
4.90
6.20
7.50
38
42
48
55
55
36
49
42
60
70
560
1h
2h
3h
4h
5h
x
x
x
x
x
14.00
13.10
15.60
19.40
24.50
55
55
60
65
65
60
60
74
67
82
250
1
2
3
4h
5h
x
x
x
x
x
3.40
4.32
5.30
7.00
7.85
42
48
48
55
60
36
49
42
60
70
280
1
2
3
4h
5h
x
x
x
x
x
3.90
5.35
6.50
8.52
9.90
42
48
48
55
60
44
53
47
60
70
300
1
2
3
4h
5h
x
x
x
x
x
4.25
5.90
7.50
9.82
11.30
48
48
55
55
60
44
53
47
60
70
h dd + 4 mm
No. of grooves z
Face width b2 (mm)
58
Type
h dd + 4 mm
1
2
3
4
5
20
35
50
67
82
● Solid pulley
O Plate pulley (with or without lightening holes)
✕ Spoked pulley
Hub position: flush one side
Material: GG 20 – DIN 1691
Standard Range
optibelt KS V-Grooved Pulleys for Cylindrical Bore –
Grooves according to DIN 2211
Section SPB/17
No.
of
grooves
Type
Weight
(≈ kg)
Finished
bore
dmax
(mm)
Distance
through hub
l
(mm)
56▲
1
2
3
O
O
O
0.61
1.00
1.00
20
20
22
41
60
62
63▲
1
2
3
O
O
O
0.76
1.20
1.20
20
20
22
41
60
62
71▲
1
2
3
O
O
O
0.79
1.31
1.60
22
22
22
41
60
55
75▲
1
2
3
O
O
O
0.82
1.42
1.85
25
25
25
41
60
62
80▲
1
2
3
4h
5h
O
O
O
O
O
1.03
1.65
2.05
2.40
2.73
28
28
28
28
28
41
60
55
70
80
85▲
1
2
3
4h
5h
O
O
O
O
O
1.10
1.70
2.15
2.70
3.00
30
30
30
30
30
41
60
55
70
75
90▲
1
2
3
4h
5h
O
O
O
O
O
1.17
1.80
2.30
3.05
3.30
32
38
38
38
38
41
60
55
70
75
95▲
1
2
3
4h
5h
O
O
O
O
O
1.25
2.00
2.50
2.90
3.60
35
38
38
38
38
41
60
67
70
75
1
2
3
4h
5h
6h
O
O
O
O
O
O
1.32
2.11
2.85
3.81
4.45
5.20
32
38
38
38
38
38
41
60
55
70
75
124
1
2
3
4h
5h
6h
O
O
O
O
O
O
1.45
2.00
3.00
4.30
5.10
6.00
28
28
30
30
32
32
41
60
55
70
75
124
Datum
diameter
dd
(mm)
100▲
106▲
▲
No. of grooves z
Face width b2 (mm)
Datum
diameter
dd
(mm)
No.
of
grooves
Type
Weight
(≈ kg)
Finished
bore
dmax
(mm)
Distance
through hub
l
(mm)
112▲
1
2
3
4h
5h
6h
O
O
O
O
O
O
1.53
2.35
3.10
4.75
5.61
6.15
32
38
38
42
42
42
41
60
55
67
75
85
118▲
1
2
3
4h
5h
6h
O
O
O
O
O
O
1.57
2.43
3.20
6.20
7.20
6.60
32
38
42
42
42
42
41
60
55
70
75
85
125▲
1
2
3
4h
5h
6h
O
O
O
O
O
O
1.66
2.55
3.28
4.74
8.60
8.00
32
38
42
42
42
48
41
60
55
70
75
85
132▲
1
2
3
4h
5h
6h
O
O
O
O
O
O
1.88
2.63
3.49
6.30
9.40
8.50
30
30
42
42
42
42
41
60
55
70
75
85
140
1
2
3
4h
5h
6h
O
O
O
O
O
O
2.10
2.90
3.90
6.92
7.58
11.40
32
38
42
42
48
48
41
60
55
70
75
85
150
1
2
3
4h
5h
6h
O
O
O
O
O
O
2.43
3.24
4.28
6.76
8.43
12.10
32
38
42
42
48
48
43
48
60
70
75
85
160
1
2
3
4h
5h
6h
x
x
x
O
O
O
2.50
3.32
4.60
7.01
9.35
12.85
38
42
48
48
48
55
43
48
60
70
75
85
170
1
2
3
4h
5h
6h
x
x
x
O
O
O
2.85
3.44
4.89
7.20
8.90
13.10
42
42
42
48
48
48
43
48
60
70
75
85
h dd + 5,5 mm
for Section 17 only
1
2
3
4
5
6
25
44
63
86
105
124
● Solid pulley
O Plate pulley (with or without lightening holes)
✕ Spoked pulley
Hub position: flush one side
Material: GG 20 – DIN 1691
59
Standard Range
optibelt KS V-Grooved Pulleys for Cylindrical Bore –
Grooves according to DIN 2211
Section SPB/17
Datum
diameter
dd
(mm)
No.
of
grooves
Type
Weight
(≈ kg)
Finished
bore
dmax
(mm)
Distance
through hub
l
(mm)
Datum
diameter
dd
(mm)
No.
of
grooves
Type
Weight
(≈ kg)
Finished
bore
dmax
(mm)
Distance
through hub
l
(mm)
180
1
2
3
4h
5h
6h
x
x
x
x
O
O
3.10
3.90
5.28
7.42
9.05
10.80
38
42
48
48
55
60
43
48
60
70
75
85
315
1
2
3
4h
5h
6h
x
x
x
x
x
x
6.40
8.22
12.90
13.00
17.60
20.60
48
55
55
60
65
75
49
55
67
80
80
90
190
1
2
3
4h
5h
6h
x
x
x
x
O
O
3.19
4.22
5.49
7.69
9.22
11.95
42
42
42
48
50
55
43
48
60
70
75
85
355
1
2
3
4h
5h
6h
x
x
x
x
x
x
7.00
9.70
13.40
18.25
18.75
19.75
48
55
55
60
65
75
49
55
67
80
75
90
200
1
2
3
4h
5h
6h
x
x
x
x
O
O
3.40
4.45
5.85
7.98
9.50
12.20
38
42
48
50
55
60
43
48
60
60
80
90
400
1h
2h
3h
4h
5h
6h
x
x
x
x
x
x
8.46
10.00
14.30
18.50
22.50
28.00
50
55
60
65
70
75
49
55
67
80
85
90
212
1
2
3
4h
5h
6h
x
x
x
x
x
O
3.75
4.66
6.15
7.70
10.30
13.51
42
42
48
50
50
55
43
48
60
70
80
90
450
1h
2h
3h
4h
5h
6h
x
x
x
x
x
x
9.86
10.87
15.05
20.50
26.00
28.90
50
55
60
65
70
75
55
55
67
80
80
90
225
1
2
3
4h
5h
6h
x
x
x
x
O
O
4.00
5.40
6.90
8.64
11.72
14.75
42
42
48
55
50
55
43
48
60
70
90
90
500
1h
2h
3h
4h
5h
6h
x
x
x
x
x
x
10.70
13.70
15.20
21.30
30.00
33.80
50
60
65
70
75
80
55
59
67
80
80
90
250
1
2
3
4h
5h
6h
x
x
x
x
x
x
4.20
6.10
8.60
9.70
13.20
17.00
42
48
55
60
65
65
43
55
60
70
80
90
560
2h
3h
4h
5h
6h
x
x
x
x
x
15.00
24.20
26.20
34.40
39.00
60
65
70
75
80
55
67
80
80
90
280
1
2
3
4h
5h
6h
x
x
x
x
x
x
5.70
7.04
9.67
11.52
15.50
18.00
48
48
55
60
65
65
49
55
60
70
80
90
630
2h
3h
4h
5h
6h
x
x
x
x
x
20.20
27.00
30.80
37.20
44.00
60
65
75
80
90
80
80
86
90
100
300
1
2
3
4h
5h
6h
x
x
x
x
x
x
5.90
7.50
10.50
12.40
15.40
18.25
48
48
55
60
65
70
49
55
67
80
80
90
h dd + 5,5 mm
No. of grooves z
Face width b2 (mm)
60
1
2
3
4
5
6
25
44
63
86
105
124
● Solid pulley
O Plate pulley (with or without lightening holes)
✕ Spoked pulley
Hub position: flush one side
Material: GG 20 – DIN 1691
Standard Range
optibelt KS V-Grooved Pulleys for Cylindrical Bore –
Grooves according to DIN 2211
Section SPC/22
No.
of
grooves
Type
Weight
(≈ kg)
Finished
bore
dmax
(mm)
Distance
through hub
l
(mm)
Datum
diameter
dd
(mm)
180
1
2
3
4
5
6
O
O
O
O
O
O
4.20
7.20
10.40
10.50
18.00
23.70
40
50
55
55
60
65
54
64
90
95
100
115
200
1
2
3
4
5
6
O
O
O
O
O
O
4.80
7.80
10.60
11.20
15.40
27.00
40
50
55
60
65
70
54
64
90
95
100
125
1
2
3
4
5
6
x
x
x
x
x
x
5.50
7.80
10.60
13.10
16.70
35.00
48
52
52
55
60
60
54
64
90
95
100
115
250
1
2
3
4
5
6
x
x
x
x
x
x
7.30
8.80
11.10
15.30
19.00
23.70
52
52
65
70
75
60
54
64
90
95
100
115
280
1
2
3
4
5
x
x
x
x
x
8.70
10.90
15.60
17.50
20.50
52
55
70
75
75
54
64
90
95
100
315
1
2
3
4
5
6
x
x
x
x
x
x
9.10
13.00
17.10
20.00
24.70
31.20
52
55
70
75
80
85
54
74
90
95
100
115
335
2
3
4
5
6
x
x
x
x
x
14.00
18.30
22.40
28.30
34.40
55
55
60
65
75
74
90
95
100
115
355
2
3
4
5
6
x
x
x
x
x
15.20
19.20
25.80
32.00
36.20
60
70
70
75
75
74
90
95
100
115
400
3
4
5
x
x
x
20.60
28.00
32.00
70
70
75
90
105
100
Datum
diameter
dd
(mm)
225
No. of grooves z
Face width b2 (mm)
No.
of
grooves
Type
Weight
(≈ kg)
Finished
bore
dmax
(mm)
Distance
through hub
l
(mm)
450
2
3
4
5
6
x
x
x
x
x
21.10
26.30
31.10
42.20
48.50
70
75
75
80
80
80
90
105
110
120
500
3
4
5
6
x
x
x
x
28.40
34.10
48.20
52.50
75
75
80
80
90
105
110
120
560
3
4
5
6
x
x
x
x
31.10
39.00
54.10
61.50
75
75
85
85
90
105
110
120
630
3
4
5
6
x
x
x
x
38.50
48.10
62.20
73.20
80
80
85
85
90
105
110
120
1
2
3
4
5
6
38
64
90
116
142
168
● Solid pulley
O Plate pulley (with or without lightening holes)
✕ Spoked pulley
Hub position: flush one side
Material: GG 20 – DIN 1691
61
Standard Range
optibelt RE Variable Speed Pulleys
Plain bored variable datum diameters pulleys
DA
(mm)
D
(mm)
Finished
bore
dmax
(mm)
B
(mm)
R 083-1
83
40
26
R 093-1
93
45
R 108-1
108
R 121-1
Section
dd min
(mm)
dd max
(mm)
Variation
factor
Weight
(≈ kg)
48
SPZ
Z/10
63
57
79
77
1.25
1.35
0.90
28
48
SPZ
SPA
Z/10
A/13
67
66
61
60
89
87
87
85
1.33
1.32
1.43
1.42
1.03
50
28
48
SPZ
SPA
Z/10
A/13
79
81
73
75
94
102
93
100
1.19
1.26
1.27
1.33
1.65
121
55
28
48
SPZ
SPA
Z/10
A/13
92
94
86
88
107
115
106
113
1.16
1.22
1.23
1.28
1.75
R 138-1
138
55
38
48
SPZ
SPA
SPB
Z/10
A/13
B/17
109
111
116
103
105
109
124
132
131
123
130
128
1.14
1.19
1.13
1.19
1.24
1.17
2.60
R 160-1
160
80
52
48
SPZ
SPA
SPB
Z/10
A/13
B/17
119
121
126
113
115
119
134
143
153
133
141
150
1.13
1.18
1.21
1.18
1.23
1.26
4.50
R 180-1
180
80
52
48
SPA
SPB
A/13
B/17
141
146
135
139
163
173
161
170
1.16
1.18
1.19
1.22
5.40
Designation
62
Material: AL
Al = Aluminium
Rights to technical modification reserved.
Standard Range
optibelt RE Variable Speed Pulleys
Plain bored variable datum diameters pulleys
DA
(mm)
D
(mm)
Finished
bore
dmax
(mm)
B
(mm)
R 083-2
83
40
26
R 093-2
93
45
R 108-2
108
R 121-2
Material: Al
Section
dd min
(mm)
dd max
(mm)
Variation
factor
Weight
(≈ kg)
76
SPZ
Z/10
63
57
79
77
1.25
1.35
1.50
28
76
SPZ
SPA
Z/10
A/13
67
66
61
60
89
87
87
85
1.33
1.32
1.43
1.42
1.75
50
28
76
SPZ
SPA
Z/10
A/13
79
81
73
75
94
102
93
100
1.19
1.26
1.27
1.33
2.15
121
55
28
76
SPZ
SPA
Z/10
A/13
92
94
86
88
107
115
106
113
1.16
1.22
1.23
1.28
2.70
R 138-2
138
55
38
76
SPZ
SPA
SPB
Z/10
A/13
B/17
109
111
116
103
105
109
124
132
131
123
130
128
1.14
1.19
1.13
1.19
1.24
1.17
4.50
R 160-2
160
80
52
90
SPZ
SPA
SPB
Z/10
A/13
B/17
119
121
126
113
115
119
134
143
153
133
141
150
1.13
1.18
1.21
1.18
1.23
1.26
7.50
R 180-2
180
80
52
90
SPA
SPB
A/13
B/17
141
146
135
139
163
173
161
170
1.16
1.18
1.19
1.22
9.20
Designation
Al = Aluminium
Rights to technical modification reserved.
63
Standard Range
optibelt RE Variable Speed Pulleys
Variable datum diameters pulleys for taper bushes
D
(mm)
Finished
bore
dmax
(mm)
B
(mm)
Section
dd min
(mm)
Taper
bush
Designation
TB-R 092-1
92
46
25
31
SPZ
Z/10
60
55
89
88
1.48
1.60
0.85
1008
TB-R 108-1
108
50
28
35
SPZ
SPA
Z/10
A/13
B/17
75
76
68
70
87
93
102
92
100
97
1.24
1.34
1.35
1.43
1.11
1.20
1108
TB-R 120-1
120
55
28
35
SPZ
SPA
Z/10
A/13
B/17
87
88
80
82
98
105
114
104
112
108
1.20
1.29
1.30
1.36
1.10
1.50
1108
TB-R 138-1
138
65
32
38
SPZ
SPA
Z/10
A/13
B/17
105
106
98
100
116
123
132
122
130
126
1.17
1.24
1.24
1.30
1.09
2.20
1215
TB-R 159-1
159
75
42
39
SPZ
SPA
Z/10
A/13
B/17
126
128
122
128
125
144
154
152
152
148
1.14
1.20
1.24
1.18
1.18
3.50
1615
TB-R 180-1
180
75
42
45
SPZ
SPA
SPB
Z/10
A/13
B/17
133
134
137
128
128
132
151
160
173
151
158
170
1.14
1.19
1.26
1.17
1.23
1.29
4.20
1615
1008
1108
1215
1615
bore d2 (mm) from ... to ...
10-25
10-28
11-32
14-42
Variation
factor
Weight
without
bush
(≈ kg)
DA
(mm)
Taper bush
64
dd max
(mm)
Material: GG
GG = cast iron
Rights to technical modification reserved.
Bore diameter d2 see page 65
Standard Range
optibelt TB Taper Bushes
Taper bushes with metrical bore, grooves according to DIN 6885 Part 1
Taper bush
1008 1108 1210 1215 1310 1610 1615 2012 2517 3020 3030 3525 3535 4040 4545 5050
10
11
12
14
16
18
19
20
22
24G
25G
Bore
diameter d2
(mm)
5.7
C torque (Nm)
G
10
11
12
14
16
18
19
20
22
24
25
28G
11
12
14
16
18
19
20
22
24
25
28
30
32
5.7
20
11
12
14
16
18
19
20
22
24
25
28
30
32
20
14
16
18
19
20
22
24
25
28
30
32
35
20
14
16
18
19
20
22
24
25
28
30
32
35
38
40
42G
20
14
16
18
19
20
22
24
25
28
30
32
35
38
40
42G
20
14
16
18
19
20
22
24
25
28
30
32
35
38
40
42
45
48
50
16
18
19
20
22
24
25
28
30
32
35
38
40
42
45
48
50
55
60
25
28
30
32
35
38
40
42
45
48
50
55
60
65
70
75
31
49
92
35
38
40
42
45
48
50
55
60
65
70
75
35
38
40
42
45
48
50
55
60
65
70
75
80
85
90
35
38
40
42
45
48
50
55
60
65
70
75
80
85
90
40
42
45
48
50
55
60
65
70
75
80
85
90
95
100
55
60
65
70
75
80
85
90
95
100
105
110
70
75
80
85
90
95
100
105
110
115
120
125
Material: GG 20
92
115
115
172
195
275
Bush length (mm)
22.3 22.3 25.4 38.1 25.4 25.4 38.1 31.8 44.5 50.8 76.2 63.5 88.9 101.6 114.3 127.0
Weight for d2 min (≈ kg)
0.12 0.16 0.28 0.39 0.32 0.41 0.60 0.75 1.06 2.50 3.75 3.90 5.13 7.68 12.70 15.17
This is a flat-groove bore.
Flat groove taper bushes
Bore diameter
Groove width
b (mm)
Groove depth
Bore diameter
t2 (mm)
d2 (mm)
Groove width
b (mm)
Groove depth
d2 (mm)
24
25
8
8
2.0
1.3
28
42
28
12
2.0
2.2
t2 (mm)
Taper bushes with inch bore, grooves according to British Standard BS 46 Part 1
Taper bush
1008 1108 1210 1215 1310 1610 1615 2012 2517 3020 3030 3525 3535 4040 4545 5050
Bore
diameter d2
(inch)
3 /8*
3 /8*
1 /2
5 /8*
1 /2*
1/2
5/8
5/8
3 /4
7 /8
3 /4*
3/4
1/2
3/4
7/8
1G
1/2
3/4
7/8
5 /8
7 /8
1
1
11 /8
11/8G* 11/4
3 /4
1
11 /8
11 /4
5 /8*
7 /8*
1*
11 /8
11 /4
13 /8
5/8
7/8
1
11/8
11/4
13/8
11/2
15/8
1 /2
5/8*
3/4
3 /4
7 /8
1
11 /8
11 /4
13 /8
11 /2
15 /8
13 /4
17 /8
2
21 /8
21 /4
23 /8
21 /2
5 /8
7/8 *
3 /4
1
1
11 /8
11/8 11/4
11/4 13/8
13/8 11/2
11/2 15/8
15/8G* 13/4
17 /8
2
7/8
11/4
13/8
11/2
15/8
13 /4 *
17/8
2
21 /8 *
21/4
23/8
21/2
25/8
23/4
27/8
3
11/4
13/8
11/2
15/8
13 / 4 *
17/8
2
21 / 8 *
21/4
23/8
21/2
25 /8 *
23 /4 *
27/8
3
11 /2 11 /2
15 /8 15 /8
13 /4 13 /4
17 /8 17 /8
2
2
21 /8 21 /8
21 /4 21 /4
23 /8 23 /8
21 /2 21 /2
25 /8 25 /8
23 /4 23 /4
27 /8 27 /8
3
3
31 /8 31 /8
31 /4 31 /4
33 /8 33 /8
31 /2 G 31 /2 G
13 / 4 * 21 / 4 *
17 / 8 * 23 / 8 *
2* 21/2*
21 / 8 * 23 / 4 *
21 / 4 * 27 / 8 *
23/8* 3*
21 / 2 * 31 / 4 *
25 / 8 * 33 / 8 *
23 / 4 * 31 / 2 *
27 / 8 * 33 / 4 *
3*
4*
31/8* 41/4G*
31/4* 41/2G*
33 /8 *
31 /2 *
33/4G*
4G *
3*
31/4*
31/2*
33/4*
4*
41/4*
41/2*
43/4*
5G *
Material: GG 20
5.7
Starting torque (Nm)
5.7
20
20
20
20
20
31
49
92
92
115
115
172
195
275
Bush length (mm)
22.3 22.3 25.4 38.1 25.4 25.4 38.1 31.8 44.5 50.8 76.2 63.5 88.9 101.6 114.3 127.0
Weight for d2 min (≈ kg)
0.12 0.16 0.28 0.39 0.32 0.41 0.60 0.75 1.06 2.50 3.75 3.90 5.13 7.68 12.70 15.17
* Non stock item
G
This is a flat-groove bore.
65
Design Calculation
Abbreviations used in Formulae
a
= drive centre distance provisional
(mm)
anom = drive centre distance calculated with a
standard belt length
(mm)
LdSt
= standard belt datum length
Ldth
= calculated belt datum length
(mm)
ng
= speed of the larger pulley
(rpm)
nk
= speed of the smaller pulley
(rpm)
n1
= speed of the driver pulley
(rpm)
n2
= speed of the driven pulley
(rpm)
P
= motor or normal running power
(kW*)
PB
= design power
(kW*)
PN
= nominal power rating per belt
(kW*)
Sa
= minimum static shaft loading
(N)
T
= minimum static tension per belt
(N)
v
= belt speed
(m/s)
x
= minimum allowance above
centre distance anom for belt stretch and wear
(mm)
y
= minimum allowance below
centre distance anom for easy belt fitting
(mm)
bd
= datum width
b1
= top width
c1
= arc of contact correction factor
c2
= service factor
c3
= belt length factor
c4
= number of idlers
ddg
= datum diameter of large pulley
(selection to BS 3790/DIN 2211)
(mm)
ddk
= datum diameter of small pulley
(selection to BS 3790/DIN 2211)
(mm)
dd1
= datum diameter of the driver pulley
(mm)
dd2
= datum diameter of the driven pulley
(mm)
E
= belt deflection per 100 mm span length
(mm)
Ea
= belt deflection for a given span length
(mm)
z
= number of belts
f
= load used to set belt tension
(N)
= flex rate
α
= angle of belt drive = 90° –
fB
i
= drive ratio
k
= constant for calculating centrifugal force in belt set
L
= span length
(mm)
LiSt
= standard inside belt length
(mm)
Lith
= calculated inside belt length
(mm)
(sec-1)
β
β
2
= arc of contact on small pulley
(mm)
(degrees)
(degrees)
* 1 kW = 1kNm/s
The terms pitch diameter (dw), pitch length (Lw) and pitch circumference (Uw) used previously have been changed
to datum diameter (dd), datum length (Ld) and datum circumference (Ud), in order to bring them into line with
current Standard terminology.
66
Design Calculation
Optibelt Nominal Power Rating PN – Arc of Contact Correction Factor c1
The Optibelt nominal power ratings PN in Tables 25 to 48 are
based upon an internationally recognised basic formula and a
theoretical belt life of 25,000 hours ander ideal conditions. This
formula contains material constants that take into account the
quality of the raw materials used and make allowances for
production methods. The special qualities of Optibelt V-belts made
it possible for example to use other material constants than those
given in DIN Standards. As a result, the nominal Optibelt power
ratings PN significantly exceed the ratings given, for wedge belts
in BS 3790 and DIN 7753 Part 2 and for classical V-belts in BS
3790 and DIN 2218, for the same theoretical belt life. The nominal
power ratings PN are based on the smallest loaded pulley in the
drive system. The belt power rating value PN is calculated taking
into account
● the datum diameter of the smaller pulley ddk
● the speed of the smaller pulley nk
● the drive ratio i
● an assumed arc of contact at the smaller pulley of = 180°
● a reference belt length for the specific belt section.
In order to account for the true drive data, based on the arc of
contact and the belt lengths employed, correction factors for the arc
of contact c1 and length c3 have been introduced.
If required, drive calculations can be provided for any theoretical
belt life.
Intermediate values for nominal power rating, arc of contact and
length correction factors can be foand by linear interpolation.
The factor c1 corrects the power rating PN when the arc of contact
is smaller than 180°, as the PN value was calculated on the arc of
contact β = 180° on the smaller pulley.
Table 16
ddg – ddk
anom
b≈
c1
0
0.05
0.10
0.15
0.20
180°
177°
174°
171°
168°
1.00
1.00
1.00
1.00
0.99
0.25
0.30
0.35
0.40
0.45
165°
162°
160°
156°
153°
0.99
0.99
0.99
0.99
0.98
0.50
0.55
0.60
0.65
0.70
150°
147°
144°
141°
139°
0.98
0.98
0.98
0.97
0.97
0.75
0.80
0.85
0.90
0.95
136°
133°
130°
126°
123°
0.97
0.96
0.96
0.96
0.95
1.00
1.05
1.10
1.15
1.20
119°
115°
112°
109°
106°
0.94
0.94
0.93
0.93
0.92
1.25
1.30
1.35
1.40
1.45
103°
100°
96°
92°
88°
0.91
0.91
0.90
0.88
0.87
1.50
1.55
1.60
84°
80°
77°
0.86
0.84
0.83
67
Design Calculation
Service Factor c2
The service factor c2 takes account of the daily operating time and
of the type of driver and driven machine. It applies exclusively to
two-pulley drives. Other arrangements such as drives with tension
and guide idlers have not been taken into consideration. Pages
114-116 provide the relevant basic design guidelines for drives
with more than two pulleys.
Adverse operating conditions (e.g. aggressive dust, particularly high ambient temperatures or the effects of various media)
have not been taken into account. As it is practically impossible
to cover every conceivable combination of driver/driven machine/operating conditions in a summary that complies with the
relevant standards, the service factors are approximate
values.
Table 17
In special cases, e.g. increased starting torque (direct
on-line starting of fans), on drives with frequent starts
and stops, on systems subject to exceptional shock
loads, or when significant masses are to be accelerated
or braked, the service factor must be increased.
Empirical value:
With a starting torque > 1.8, this figure is to be divided
by 1.5 in order to calculate the minimum service factor
c2. Example: Starting torque MA = 3.0; c2 selected 2.0.
Please consult our Applications Engineering Department for the solution of special problems.
Types of Prime Movers
Types of Driven Machine
A.c. motors and three-phase squirrel cage
motors with a normal starting torque (up to
1.8 times nominal torque), e.g. synchronous motors and single-phase motors with
starting-aid phase, three-phase squirrel
cage motors with direct start, star-delta connection or slip ring starters; direct-current
shunt-wound motors, combustion engines
and turbines n > 600 rpm
A.c. motors and three-phase squirrel cage
motors with high starting torque (over 1.8
times nominal torque), e.g. single-phase
motors with high starting torque; directcurrent series-wound motors with series
connection and compound; combustion
engines and turbines n ≤ 600 rpm
Service factor c2
for daily operation time of (hours)
over 10 below 16
over 16
up to 10
Service factor c2
for daily operation time of (hours)
up to 10
over 10 below 16
over 16
Light drives
Centrifugal pumps and compressors,
belt conveyors (lightweight materials),
fans and pumps up to 7.5 kW
1.1
1.1
1.2
1.1
1.2
1.3
1.1
1.2
1.3
1.2
1.3
1.4
1.2
1.3
1.4
1.4
1.5
1.6
1.3
1.4
1.5
1.5
1.6
1.8
Medium drives
Plate cutters, presses, chain and belt
conveyors (heavy materials), screen vibrators, generators and exciters, bakery
machinery, machine tools (lathes and
grinders), laundry machinery, printing
machines, fans and pumps over 7.5 kW
Heavy duty drives
Crushing plants, piston compressors,
heavy-duty conveyors, directional throw
conveyors, push conveyors (screw, plate
belts, bucket and shovel conveyors), lifts,
brick presses, textile machinery, paper
machinery, piston pumps, dredger
pumps, saw mills, hammer mills
Very heavy duty drives
Heavy-duty mills, stone crushers, calenders, mixers, winches, cranes, dredgers,
heavy duty wood working machinery
68
Design Calculation
Length Factor c3 for optibelt Wedge Belts and Kraftbands
The length factor c3 takes into account the flex rate of the belt based
on the reference length for the particular belt section.
This results in the following relationships:
Belt length > reference length
Belt length = reference length
Belt length < reference length
c3 > 1.0
c3 = 1.0
c3 < 1.0
Table 18
Section SPZ, XPZ
Datum length
(mm)
Section SPA, XPA
Section SPB, XPB
c3
Datum length
(mm)
c3
Datum length
(mm)
c3
630
670
710
750
800
0.83
0.84
0.85
0.86
0.87
800
850
900
950
1000
0.81
0.82
0.83
0.84
0.85
1250
1320
1400
1500
1600
0.83
0.84
0.85
0.86
0.87
850
900
950
1000
1060
0.88
0 89
0.90
0.91
0.92
1060
1120
1180
1250
1320
0.86
0.86
0.87
0.88
0.89
1700
1800
1900
2000
2120
0.88
0.89
0.90
0.91
0.92
1120
1180
1250
1320
1400
0.93
0.94
0.95
0.96
0.98
1400
1500
1600
1700
1800
0.90
0.91
0.92
0.93
0.94
2240
2360
2500
2650
2800
0.93
0.93
0.94
0.95
0.96
1500
1600
1700
1800
1900
0.99
1.00
1.01
1.02
1.03
1900
2000
2120
2240
2360
0.95
0.96
0.97
0.98
0.99
3000
3150
3350
3550
3750
0.97
0.98
0.99
1.00
1.01
2000
2120
2240
2360
2500
1.04
1.05
1.06
1.07
1.08
2500
2650
2800
3000
3150
1.00
1.01
1.02
1.03
1.04
4000
4250
4500
4700
5000
1.02
1.03
1.04
1.04
1.05
2650
2800
3000
3150
3350
1.09
1.10
1.11
1.12
1.13
3350
3550
3750
4000
4250
1.05
1.06
1.07
1.08
1.09
5300
5600
6000
6300
6700
1.06
1.07
1.08
1.09
1.10
3550
3750
4000
4250
4500
1.15
1.16
1.17
1.18
1.19
4500
4750
5000
5300
5600
1.10
1.11
1.12
1.13
1.14
7100
7500
8000
8500
9000
1.11
1.12
1.13
1.14
1.15
6000
1.15
9500
10000
1.16
1.17
Section SPC, XPC
Datum length
(mm)
c3
2000
2120
2240
2360
2500
2650
2800
3000
3150
3350
0.85
0.86
0.86
0.87
0.88
0.89
0.90
0.91
0.91
0.92
3550
3750
4000
4250
4500
0.93
0.94
0.95
0 96
0.97
4750
5000
5300
5600
6000
0.98
0.98
0.99
1.00
1.01
6300
6700
7100
7500
8000
1.02
1.03
1.04
1.04
1.05
8500
9000
9500
10000
10600
1.06
1.07
1.08
1.09
1.09
11200
11800
12500
13200
14000
1.10
1.11
1.12
1.13
1.14
15000
1.15
69
Design Calculation
Length Factor c3 for optibelt Wedge Belts and Kraftbands
Table 19
Section 3V/9N, 3VX/9NX
3V/9J, 3VX/9JX
Belt
designation
70
Outside length
(mm)
c3
Section 5V/15N, 5VX/15NX
5V/15J, 5VX/15JX
Belt
designation
Outside length
(mm)
c3
Section 8V/25N
8V/25J
Belt
designation
Outside length
(mm)
c3
3V
3V
3V
3V
3V
265
280
300
315
335
673
711
762
800
851
0.84
0.85
0.86
0.87
0.88
5V
5V
5V
5V
5V
500
530
560
600
630
1270
1346
1422
1524
1600
0.84
0.85
0.85
0.87
0.87
8V
8V
8V
8V
8V
1000
1060
1120
1180
1250
2540
2692
2845
2997
3175
0.87
0.87
0 88
0.89
0.90
3V
3V
3V
3V
3V
355
375
400
425
450
902
952
1016
1079
1143
0.90
0.91
0.92
0.93
0.94
5V
5V
5V
5V
5V
670
710
750
800
850
1702
1803
1905
2032
2159
0.88
0.89
0.90
0.91
0.92
8V
8V
8V
8V
8V
1320
1400
1500
1600
1700
3353
3556
3810
4064
4318
0.91
0.92
0.93
0.93
0.94
3V
3V
3V
3V
3V
475
500
530
560
600
1206
1270
1346
1422
1524
0.95
0.96
0.97
0.98
0.99
5V 900
5V 950
5V 1000
5V 1060
5V 1120
2286
2413
2540
2692
2845
0.93
0.94
0.95
0.96
0.96
8V
8V
8V
8V
8V
1800
1900
2000
2120
2240
4572
4826
5080
5385
5690
0.95
0.96
0.97
0.98
0.98
3V
3V
3V
3V
3V
630
670
710
750
800
1600
1702
1803
1905
2032
1.00
1.01
1.02
1.03
1.04
5V
5V
5V
5V
5V
1180
1250
1320
1400
1500
2997
3175
3353
3556
3810
0.97
0.98
0.99
1.00
1.01
8V
8V
8V
8V
8V
2360
2500
2650
2800
3000
5994
6350
6731
7112
7620
0.99
1.00
1.01
1.02
1.03
3V 850
3V 900
3V 950
3V 1000
3V 1060
2159
2286
2413
2540
2692
1.05
1.07
1.07
1.08
1.09
5V
5V
5V
5V
5V
1600
1700
1800
1900
2000
4064
4318
4572
4826
5080
1.02
1.03
1.04
1.05
1.06
8V
8V
8V
8V
8V
3150
3350
3550
3750
4000
8001
8509
9017
9525
10160
1.03
1.04
1.05
1.06
1.07
3V
3V
3V
3V
3V
1120
1180
1250
1320
1400
2845
2997
3175
3353
3556
1.11
1.11
1.13
1.14
1.15
5V
5V
5V
5V
5V
2120
2240
2360
2500
2650
5385
5690
5994
6350
6731
1.07
1.07
1.08
1.09
1.10
8V
8V
8V
8V
8V
4250
4500
4750
5000
5300
10795
11430
12065
12700
13462
1.08
1.09
1.09
1.10
1.11
3V
3V
3V
3V
3V
1500
1600
1700
1800
1900
3810
4064
4318
4572
4826
1.16
1.17
1.18
1.19
1.20
5V
5V
5V
5V
5V
2800
3000
3150
3350
3550
7112
7620
8001
8509
9017
1.11
1.12
1.13
1.14
1.15
8V 5600
8V 6000
8V 6300
14224
15240
16002
1.12
1.13
1.13
3V 2000
5080
1.21
5V 3750
5V 4000
9525
10160
1.16
1.17
Design Calculation
Length Factor c3 for optibelt Wedge Belts and Kraftbands
Table 20
Section 5*
Datum
length
(mm)
c3
172
202
248
277
292
312
327
334
347
364
387
418
437
487
512
524
542
566
612
0.87
0.91
0.95
0.97
0.99
1.00
1.01
1.01
1.02
1.03
1.05
1.06
1.07
1.10
1.11
1.11
1.12
1.13
1.15
Section Y/6*
Datum
length
(mm)
c3
280
295
315
330
350
370
390
415
440
465
490
515
555
615
725
765
865
0,97
0,99
1,00
1,01
1,02
1,04
1,05
1,06
1 07
1,09
1,10
1,11
1,13
1,15
1,19
1,20
1,23
Section 8
Datum
length
(mm)
299*
334*
374*
419*
444*
469*
494*
549*
579*
594*
619*
649*
689*
729*
769*
819*
869
894
919
969
1019
1139
1269
1339
1419
1519
Section C/22, CX/X22
1458
1558
1658
1858
1958
2058
2178
2298
2418
2558
2708
2858
3058
3208
3608
3808
4058
4308
4558
4808
0.80
0.81
0.83
0.85
0.86
0.87
0.88
0.89
0.90
0.92
0.93
0.94
0.95
0.96
0.99
1.00
1.01
1.03
1.04
1.05
5058
5358
5658
6058
6358
6758
7158
7558
8058
9058
10058
1.06
1.07
1.09
1.10
1.11
1.13
1.14
1.15
1.17
1.19
1.22
* Raw edge, moulded cogged V-belts
c3
0.86
0.88
0.91
0.93
0.94
0.95
0.97
0.99
1.00
1.01
1.01
1.02
1.04
1.05
1.06
1.08
1.09
1.10
1.10
1.11
1.13
1.15
1.18
1.19
1.20
1.22
Section Z/10,
ZX/X10
Datum
length
(mm)
422*
447*
472*
497*
522*
552*
582*
622
652
692
732
822
847
887
922
947
997
1022
1082
1142
1172
1202
1272
1342
1422
1522
1622
c3
0.86
0.87
0.88
0.89
0.90
0.92
0.93
0.94
0.95
0.96
0.98
1.00
1.01
1.02
1.02
1.03
1.04
1.05
1.06
1.07
1.08
1.08
1.10
1.11
1.12
1.14
1.15
Section A/13,
AX/X13
Datum
length
(mm)
c3
660
740
780
830
880
930
980
1030
1090
1150
1210
1280
1350
1430
1530
1630
1730
1830
1930
2030
2150
2270
2390
2530
2680
2830
3030
3180
3380
3780
4030
4530
5030
0.80
0.82
0.83
0.85
0.86
0.87
0.88
0.89
0.90
0.91
0.92
0.94
0.95
0.96
0.97
0.99
1.00
1.01
1.02
1.03
1.05
1.06
1.07
1.08
1.10
1.11
1.12
1.14
1.15
1.17
1.19
1.22
1.24
Section 25
1311
1461
1561
1661
1761
1861
1961
2061
2181
2301
2421
2561
2711
2861
3061
3211
3411
3611
3811
4061
0.75
0.77
0.78
0.79
0.80
0.81
0.82
0.83
0.85
0.86
0.87
0.88
0.89
0.90
0.92
0.93
0.94
0.95
0.96
0.98
4311
4561
4811
5061
5361
5661
6061
6361
6761
7161
7561
8061
9061
10061
11261
12561
Section B/17,
BX/X17
Datum
length
(mm)
c3
900
990
1040
1100
1140
1220
1290
1360
1440
1540
1640
1740
1840
1940
2040
2160
2280
2400
2590
2690
2840
3040
3190
3390
3590
3790
4040
4290
4540
4790
5040
5340
5640
6040
6340
0.81
0.83
0.84
0.85
0.85
0.87
0.88
0.89
0.90
0.92
0.93
0.94
0.95
0.97
0.98
0.99
1.00
1.01
1.03
1.04
1.05
1.06
1.07
1.09
1.10
1.11
1.13
1.14
1.15
1.17
1.18
1.19
1.20
1.22
1.23
Section D/32
0.99
1.00
1.01
1.02
1.04
1.05
1.06
1.07
1.09
1.10
1.11
1.13
1.15
1.18
1.20
1.23
3225
3425
3625
3825
4075
4325
4575
4825
5075
5375
5675
6075
6375
6775
7175
7575
8075
8575
9075
9575
0.86
0.87
0.88
0.89
0.91
0.92
0.93
0.94
0.95
0.96
0.98
0.99
1.00
1.01
1.03
1.04
1.05
1.06
1.08
1.09
10075
10675
11275
11875
12575
13275
14075
15075
16075
Section 20
Datum
length
(mm)
c3
948
998
1048
1168
1228
1298
1368
1448
1548
1648
1848
2048
2168
2298
2408
2548
2698
2848
3048
3198
3398
3598
3798
4048
4298
4548
4798
5048
5348
5648
6048
6348
7148
8048
0.75
0.76
0.77
0.79
0.80
0.81
0.82
0.83
0.85
0.86
0.88
0.91
0.92
0.93
0.94
0.95
0.96
0.98
0.99
1.00
1.01
1.03
1.04
1.05
1.06
1.08
1.09
1.10
1.11
1.13
1.14
1.15
1.18
1.21
Section E/40
1.10
1.11
1.13
1.14
1.15
1.16
1.18
1.19
1.21
4830
5080
5380
5680
6080
6380
6780
7180
7580
8080
8580
9080
9580
10080
10680
11280
11880
12580
13280
14080
15080
16080
0.92
0.93
0.94
0.95
0.96
0.97
0.99
1.00
1.01
1.03
1.04
1.05
1.06
1.07
1.09
1.10
1.11
1.12
1.14
1.15
1.17
1.18
71
Design Calculation
Guidelines for Selecting V-Belt and Kraftband Sections
By using the following diagrams, the most suitable belt section as
far as efficiency and size are concerned, can be selected for a
specific application. The most efficient power transmission is
achieved by selecting as large a pulley diameter as possible for the
section in question. The limits to be observed are the maximum
permissible circumferential speed, namely Vmax = 42 m/s for high
performance wedge belts and Vmax = 30 m/s for classical V-belts.
Experience has shown that the minimum pulley diameters should be
avoided. These drives require a larger number of belts needing
wider pulleys, and are therefore more costly.
In such boundary areas it is advisable to design the drive with both
sections and then to select the most suitable.
Comparing space requirement and costs, the wedge belt normally
proves to be significantly superior to the classical V-belt for almost
all industrial machinery drives. For this reason, new designs use
wedge belts almost exclusively. It is only in special cases, for
replacement requirements and with V-flat drives, that the use of
classical section V-belts will be necessary.
In borderline cases it is recommended that the next smaller section
belt be used on the same diameter pulley, as the smaller section will
often save both cost and space. A further recommended solution
is the use of the raw edge Optibelt Super TX M=S V-belts.
Speed of the small pulley nk (rpm)
Diagram 1: Optibelt VB classical V-belts to BS 3790/DIN 2215
Design power PB = P · c2 (kW)
72
Design Calculation
Guidelines for Selecting V-Belt and Kraftband Sections
m
m
0
10
m
to
dk
m
m
m
d
dk
to
63
0
d
dk
dk
d
to
to
40
25
0
0
m
m
m
m
m
0
25
d
dk
d
to
dk
to
d
18
dk
0
to
m
m
18
0
m
d
Speed of the small pulley nk (rpm)
Diagram 2: Optibelt SK wedge belts to BS 3790/DIN 7753 Part 1
Design power PB = P · c2 (kW)
Speed of the small pulley nk (rpm)
Diagram 3: Optibelt SK wedge belts to USA Standard RMA/MPTA
Design power PB = P · c2 (kW)
73
Design Calculation
Guidelines for Selecting V-Belt and Kraftband Sections
Speed of the small pulley nk (rpm)
Diagram 4: Optibelt Super TX M=S wedge belts
d
dk
to
1
00
mm
d dk
to
0
18
mm
d dk
to
0
18
d
mm
dk
to
2
50
mm
d dk
to
0
25
Design power PB = P · c2 (kW)
Speed of the small pulley nk (rpm)
Diagram 5: Optibelt Super TX M=S classical V-belts
Design power PB = P · c2 (kW)
74
mm
d dk
to
0
40
mm
Design Calculation
Minimum Allowance x/y for Adjusting Drive Centre Distance anom
Table 21: Optibelt SK wedge belts
Datum length
(mm)
487 ≤
Minimum
allowance x (mm) –
for
tensioning
Minimun allowance y (mm) – for fitting
SPZ, XPZ
SPA, XPA
SPB, XPB
SPC, XPC
670
10
10
10
—
—
670 ≤ 1 000
15
15
15
—
—
> 1 000 ≤ 1 250
20
15
15
—
—
> 1 250 ≤ 1 800
25
20
20
20
—
> 1 800 ≤ 2 240
25
20
20
20
25
> 2 240 ≤ 3 000
35
20
20
20
30
> 3 000 ≤ 4 000
45
20
20
20
30
> 4 000 ≤ 5 000
55
20
20
25
30
> 5 000 ≤ 6 300
70
25
25
30
35
> 6 300 ≤ 8 000
85
25
25
35
40
> 8 000 ≤ 10 000
110
30
30
35
45
> 10 000 ≤ 12 500
135
—
—
35
45
> 12 500 ≤ 15 000
150
—
—
45
55
> 15 000 ≤ 18 000
190
—
—
45
55
>
Table 22: Optibelt SK wedge belts
Length
designation
Outside length
(mm)
Minimum
allowance x (mm) –
for
tensioning
Minimum allowance y (mm) – for fitting
3V/9N, 3VX/9NX
5V/15N, 5VX/15NX
8V/25N
>
265 ≤
400
>
673 ≤ 1 016
15
15
—
—
>
400 ≤
475
> 1 016 ≤ 1 206
20
15
—
—
>
475 ≤
710
> 1 206 ≤ 1 803
25
20
20
—
>
710 ≤
850
> 1 803 ≤ 2 159
25
20
20
—
>
850 ≤ 1 180
> 2 159 ≤ 2 997
35
20
20
40
> 1 180 ≤ 1 600
> 2 997 ≤ 4 064
45
20
20
40
> 1 600 ≤ 2 000
> 4 064 ≤ 5 080
55
20
25
40
> 2 000 ≤ 2 500
> 5 080 ≤ 6 350
70
—
30
45
> 2 500 ≤ 3 150
> 6 350 ≤ 8 001
85
—
35
45
> 3 150 ≤ 4 000
> 8 001 ≤ 10 160
110
—
35
50
> 4 000 ≤ 5 000
> 10 160 ≤ 12 700
135
—
35
50
> 5 000 ≤ 6 000
> 12 700 ≤ 15 240
150
—
45
60
> 6 000 ≤ 7 100
> 15 240 ≤ 18 034
190
—
45
60
75
Design Calculation
Minimum Allowance x/y for Adjusting Drive Centre Distance anom
Table 23: Optibelt VB classical V-belts
Datum length
(mm)
Minimum
allowance x (mm) –
for
tensioning
5
Y/6
8
Z/10, A/13, B/17,
ZX/X10 AX/X13 BX/X17
20
C/22,
CX/X22
25
D/32
E/40
≤
200
5
10
—
—
—
—
—
—
—
—
—
—
>
200 ≤
250
5
10
10
—
—
—
—
—
—
—
—
—
>
250 ≤
315
5
10
10
10
10
—
—
—
—
—
—
—
>
315 ≤
670
10
—
—
10
10
10
10
—
—
—
—
—
>
670 ≤ 1 000
15
—
—
10
15
15
15
—
—
—
—
—
> 1 000 ≤ 1 250
20
—
—
15
15
15
15
20
20
—
—
—
> 1 250 ≤ 1 800
25
—
—
15
20
20
20
20
25
25
—
—
> 1 800 ≤ 2 240
25
—
—
20
20
20
20
25
25
30
35
—
> 2 240 ≤ 3 000
35
—
—
—
20
20
20
25
30
30
35
40
> 3 000 ≤ 4 000
45
—
—
—
20
20
20
25
30
30
35
40
> 4 000 ≤ 5 000
55
—
—
—
20
20
20
30
30
30
35
40
> 5 000 ≤ 6 300
70
—
—
—
—
20
25
35
35
35
40
45
> 6 300 ≤ 8 000
85
—
—
—
—
20
25
40
40
40
45
50
> 8 000 ≤ 10 000
110
—
—
—
—
25
25
40
45
45
45
50
> 10 000 ≤ 12 500
135
—
—
—
—
—
30
40
45
45
50
55
> 12 500 ≤ 15 000
150
—
—
—
—
—
40
50
55
55
60
65
> 15 000 ≤ 18 000
190
—
—
—
—
—
40
50
55
55
60
65
anom
76
Minimum allowance y (mm) – for fitting
Design Calculation
Minimum Allowance x/y for Adjusting Drive Centre Distance anom
Table 24: Optibelt KB Kraftbands with wedge belts
Length
designation
Outside length
(mm)
Minimum
allowance x (mm) –
for
tensioning
Minimum allowance y (mm) – for smooth fitting
SPZ, 3V/9J
SPA, SPB, 5V/15J
8V/25J
SPC
475 ≤
710
1 206 ≤ 1 803
25
35
40
—
—
>
710 ≤
850
> 1 803 ≤ 2 159
25
35
40
—
—
>
850 ≤ 1 180
> 2 159 ≤ 2 997
35
35
40
80
—
> 1 180 ≤ 1 600
> 2 997 ≤ 4 064
45
35
40
80
80
> 1 600 ≤ 2 000
> 4 064 ≤ 5 080
55
40
45
85
85
> 2 000 ≤ 2 500
> 5 080 ≤ 6 350
70
45
50
85
85
> 2 500 ≤ 3 150
> 6 350 ≤ 8 001
85
50
55
95
95
> 3 150 ≤ 4 000
> 8 001 ≤ 10 160
110
50
55
95
95
> 4 000 ≤ 5 000
> 10 160 ≤ 12 700
135
—
60
95
95
> 5 000 ≤ 6 000
> 12 700 ≤ 15 240
150
—
70
105
105
> 6 000 ≤ 7 100
> 15 240 ≤ 18 034
190
—
85
120
120
Note: Datum lengths must be considered for Kraftbands with sections SPZ, SPA, SPB and SPC.
For raw edge Kraftbands, the same x/y values apply.
Table 25: Optibelt KB Kraftbands with classical V-belts
Lengths
(mm)
Minimum
allowance x (mm) –
for
tensioning
Minimum allowance y (mm) – for smooth fitting
A/HA
B/HB
C/HC
D/HD
1 200 ≤ 1 800
25
30
35
—
—
> 1 800 ≤ 2 240
25
30
35
—
—
> 2 240 ≤ 3 000
35
30
35
50
85
> 3 000 ≤ 4 000
45
30
35
50
85
> 4 000 ≤ 5 000
55
30
40
55
90
> 5 000 ≤ 6 300
70
35
45
60
90
> 6 300 ≤ 8 000
85
45
55
65
100
> 8 000 ≤ 10 000
110
45
55
65
100
> 10 000 ≤ 12 500
135
50
60
75
100
> 12 500 ≤ 15 000
150
60
70
85
110
> 15 000 ≤ 18 000
190
70
85
95
125
77
Design Calculation
Formulae and Calculation Examples
Prime mover
Operating conditions
Driven machine
3-phase motor
P = 132 kW
n1 = 1485 rpm
Star delta start
Starting torque MA = 0.65 MN
Daily operation: approx. 18 hours
Number of starts: one per day
Operating conditions: normal room temperature, no exposure to oil, water or dust
Drive centre distance: between 1300
and 1500, variable
Pulley diameter: dd1 ≤ 300 mm
Fan
P = 132 kW
n2 = 825 ± 15 rpm
Start-up: under load
Type of loading: continuous
Note: The calculation takes into consideration the standard specified by ISO for datum diameter dd (supersedes pitch diameter dw) and
datum length Ld (supersedes pitch length Lw).
Formulae
Calculation example
Service factor
c2 from table 17 page 68
c2 = 1.3
Design Power
PB = P · c 2
PB = 132 · 1.3 = 171.6 kW
Selection of belt section
from Diagram 4 page 74
SPB
Speed ratio
i=
n1
n2
=
dd2
dd1
i=
1485
825
= 1.8
Datum diameters of the pulleys
dd1 selected from table 9 page 42
dd1 = 280 mm selected
dd2 = dd1 · i
dd2 = 280 mm · 1.8 = 504
dd1 =
78
dd2
i
dd2 = 500 mm selected from table 9 page 42
Design Calculation
Formulae and Calculation Example
Formulae
Calculation example
Recalculation of the speed of the driven unit
d
= d2
ivorh
dd1
n1
n2 vorh =
ivorh
500
= 1,79
280
1485
n2 vorh =
= 830 rpm
1,79
ivorh
=
Required:
825 ± 15 rpm
(requirement met)
Drive centre distance (preleminary choice)
Recommended: a > 0,7 (ddg + ddk)
a<2
a = 1400 mm selected
(ddg + ddk)
Belt datum length
Ldth ≈ 2 a + 1,57 (ddg + ddk) +
(ddg – ddk)2
Ldth ≈ 2 · 1400 + 1.57 · 780 +
4a
actual:
2202
4 · 1400
≈ 4033 mm
next standard length selected from page 18
Ldth = 2 a · sin
β
π
+
2
2
(ddg + ddk) +
α·π
180°
(ddg – ddk)
LdSt = 4000 mm
Drive centre distance (actual)
Calculated from LdSt and Ldth
LdSt – Ldth
(if LdSt > Ldth) anom ≈ a +
2
Ldth – LdSt
(if LdSt < Ldth) anom ≈ a –
2
actual:
LdSt –
anom =
π
4033– 4000
2
≈ 1383.5 mm
(ddg + ddk)
2
+
4
[
anom ≈ 1400 –
LdSt –
π
2
]
(ddg + ddk)
4
2
–
(ddg – ddk)2
8
Minimum allowance x/y for adjusting drive centre distance anom
x/y from Table 21 page 75
x ≥ 45 mm / y ≥ 20 mm
Belt speed and flex rate
Speed and flex rate of the belt
v =
fb =
ddk · nk
19100
2 · 1000 · v
LdSt
(vmax ≈ 42 m/s)
v =
(fB max ≈ 100 s-1)
fb =
280 · 1485
19100
= 21.76 m/s
2 · 1000 · 21.76
4000
= 10.88 s-1
79
Design Calculation
Formulae and Calculation Examples
Formulae
Calculation example
Arc of contact and correction factor
ddg – ddk
anom
β° approximate and c1 from table 16 page 67
β
actual: cos
2
=
ddg – ddk
500 – 280
1383.5
}
β ≈ 170.
c1 = 1.0
= 0,16
linear interpolated
2 anom
Length factor
c3 = 1.02
c3 from table 18 page 69
Nominal power per belt
PN for
{
ddk = 280 mm
i
= 1.79
nk = 1485 min-1
Section SPB
from table 28 page 84
PN = 20.63 + 1.23 = 21.86 kW
Number of belts
z=
P · c2
z=
PN · c 1 · c 3
132 · 1.3
21.86 · 1.0 · 1.02
= 7.70
Suggested:
8 Optibelt SK wedge belts SPB 4000 Ld S=C plus
Minimum static tension per belt
T≈
500 · (2.02 – c1) · PB
c1 · z · v
+ k · v2
T≈
500 · (2.02 – 1.0) · 171.6
1.0 · 8 · 21.76
+ 0.19 · 473.5 ≈ 593 N
k from Diagram 8 page 123
(Multiply ‘T’ by 1.3 at initial installation)
Initial installation:
T = 593 N · 1.3 = 771 N
Minimum static shaft loading
β
·z
Sa ≈ 2 T · sin
2
(Multiply by a factor of 1.3 at initial installation)
Sa ≈ 2 · 593 · 0.9962 · 8 ≈ 9452 N
Initial installation:
Sa = 9452 N · 1.3 = 12288 N
Belt deflection
Ea ≈
E·L
100
E from Diagram 8 page 123
β
L = anom · sin
2
80
Ea ≈
2.7 · 1378
≈ 37 mm
100
E ≈ 2.7 mm
L = 1383.5 · 0.9962 · 1378 mm
Drive Calculation
optibelt CAP
The drive is to be equipped with:
-
8 Optibelt SK wedge belts SPC 6300 Ld S = C plus
Optibelt KS V-grooved pulley for taper bushes TB SPC 400-8
Optibelt TB taper bush 4545 (bore diameter 55-110 mm)
Optibelt KS V-grooved pulley for taper bushes TB SPC 800-8
Optibelt TB taper bush 5050 (bore diameter 70-125 mm)
Deviations / Hints
Prime mover
Driven machine
Design power
Power prime mover
Torque driver pulley
Speed of the driver pulley
Actual output rpm speed
Datum diameter pulley 1
Datum diameter pulley 2
Datum length
Actual drive centre distance
Actual drive ratio
Min. allow. for drive centre distance for belt mounting
Min. allow. for drive centre distance for belt tensioning
:
:
PB:
P:
M:
n1 :
n2 :
dd1:
dd2:
Ld :
a:
i:
y:
x:
three-phase motor
fan
373.33 kW
224.00 kW
1205 Nm
1775 1/min
88 1/min
400.00 mm
800.00 mm
6300 mm
2198.40 mm
2.00
35.00 mm
70.00 mm
Actual service factor
Belt speed
Flex rate
Nominal power rating per belt
Angle factor
Belt length correction factor
Arc of contact of small pulley
Pulley face width
Belt span length
c2 :
v:
fB:
PN:
c1:
c3:
b:
b2 :
<:
Calculated number of belts
Drive weight
zth:
7.11
276.87 kg
Sast:
Sast:
Sadyn:
23988 N
18452 N
10547 N
Statistic axle load, initial assembly
Statistic axle load, existing belts
Dynamic axle load
1.87
37.17
11.80
51.84
0.99
1.02
169.60
212.50
2189.30
Procedures tensioning setting
For increased c2 = 1.67
1. OPTIKRIK II + III
static belt tension per V-belt :
2. Depth of impression with tensioning gauge
test force :
depth of belt deflection :
3. Length addition per 1000 mm belt length
:
4. Optibelt TT 2 tension tester
Frequency :
m/s
1/s
kW
-1 1/min
-1.60 mm
0.1%
Specific force required
°
mm
mm
for increased c2 = 1.67
initial assembly
New belts
1505 N
125 N
40 mm
5.8 mm
14.4 Hz
operating tension
existing belts
1158 N
125 N
50 mm
4.3 mm
12.7 Hz
81
Power Ratings
Section SPZ, 3V/9N, 3V/9J
Nominal Power Rating PN (kW) for β = 180° and Ld = 1600 mm
Statically balanced
v (m/s)
Pulleys
Table 26
nk
Datum diameter of small pulley ddk (mm)
(min-1)
63
71
80
85
90
95
100
112
125
132
140
150
160
180
200
700
950
1450
2850
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
3100
3200
3300
3400
3500
3600
3700
3800
3900
4000
4100
4200
4300
4400
4500
4600
4700
4800
4900
5000
5100
5200
5300
5400
5500
5600
5800
6000
6200
6400
6600
6800
7000
7200
7400
7600
7800
8000
8200
8400
0.50
0.63
0.87
1.38
0.10
0.18
0.25
0.32
0.38
0.44
0.50
0.55
0.61
0.66
0.71
0.76
0.80
0.85
0.89
0.93
0.98
1.02
1.06
1.10
1.13
1.17
1.20
1.24
1.27
1.31
1.34
1.37
1.40
1.43
1.45
1.48
1.51
1.53
1.56
1.58
1.60
1.62
1.64
1.66
1.68
1.70
1.72
1.73
1.75
1.76
1.77
1.78
1.80
1.81
1.81
1.82
1.83
1.83
1.84
1.84
1.84
1.84
1.84
1.83
1.81
1.79
1.77
1.74
1.70
1.66
1.62
1.57
1.51
1.45
0.68
0.87
1.23
2.03
0.13
0.24
0.33
0.43
0.51
0.60
0.68
0.76
0.84
0.91
0.98
1.06
1.12
1.19
1.26
1.32
1.39
1.45
1.51
1.57
1.63
1.69
1.74
1.80
1.85
1.90
1.96
2.01
2.05
2.10
2.15
2.19
2.24
2.28
2.32
2.36
2.40
2.44
2.48
2.51
2.55
2.58
2.61
2.64
2.67
2.70
2.73
2.75
2.78
2.80
2.82
2.84
2.86
2.87
2.89
2.90
2.93
2.94
2.96
2.96
2.96
2.95
2.94
2.91
2.89
2.85
2.81
2.76
2.70
2.63
0.88
1.14
1.62
2.74
0.16
0.30
0.43
0.55
0.66
0.78
0.88
0.99
1.09
1.19
1.29
1.39
1.48
1.58
1.67
1.76
1.85
1.93
2.02
2.10
2.18
2.26
2.34
2.42
2.49
2.57
2.64
2.71
2.78
2.85
2.91
2.98
3.04
3.10
3.16
3.22
3.28
3.33
3.39
3.44
3.49
3.54
3.58
3.63
3.67
3.71
3.75
3.79
3.83
3.86
3.89
3.93
3.95
3.98
4.01
4.03
4.07
4.10
4.12
4.13
4.14
4.14
4.12
4.10
4.07
4.02
3.97
3.91
3.83
3.75
1.00
1.29
1.84
3.13
0.18
0.34
0.48
0.62
0.75
0.87
1.00
1.12
1.24
1.35
1.46
1.57
1.68
1.79
1.89
2.00
2.10
2.20
2.29
2.39
2.48
2.58
2.67
2.75
2.84
2.93
3.01
3.09
3.17
3.25
3.33
3.40
3.48
3.55
3.62
3.68
3.75
3.81
3.88
3.94
4.00
4.05
4.11
4.16
4.21
4.26
4.30
4.35
4.39
4.43
4.47
4.50
4.53
4.56
4.59
4.62
4.66
4.70
4.72
4.74
4.74
4.74
4.72
4.69
4.65
4.60
4.53
4.46
4.37
4.27
1.11
1.44
2.06
3.52
0.20
0.37
0.53
0.68
0.83
0.97
1.11
1.24
1.38
1.51
1.63
1.76
1.88
2.00
2.12
2.23
2.35
2.46
2.57
2.68
2.78
2.89
2.99
3.09
3.19
3.28
3.38
3.47
3.56
3.65
3.74
3.82
3.91
3.99
4.06
4.14
4.22
4.29
4.36
4.43
4.49
4.55
4.62
4.67
4.73
4.78
4.84
4.88
4.93
4.97
5.02
5.05
5.09
5.12
5.16
5.18
5.23
5.27
5.29
5.30
5.30
5.29
5.27
5.23
5.18
5.11
5.03
4.94
4.83
4.70
1.22
1.59
2.27
3.90
0.22
0.41
0.58
0.75
0.91
1.07
1.22
1.37
1.52
1.66
1.80
1.94
2.07
2.21
2.34
2.47
2.59
2.72
2.84
2.96
3.08
3.20
3.31
3.42
3.53
3.64
3.74
3.85
3.95
4.05
4.14
4.24
4.33
4.42
4.50
4.59
4.67
4.75
4.83
4.90
4.97
5.04
5.11
5.18
5.24
5.30
5.35
5.40
5.45
5.50
5.55
5.59
5.63
5.66
5.69
5.72
5.77
5.80
5.82
5.83
5.82
5.80
5.76
5.71
5.64
5.56
5.46
5.34
5.21
5.05
1.33
1.74
2.49
4.27
0.24
0.44
0.63
0.81
0.99
1.16
1.33
1.50
1.66
1.81
1.97
2.12
2.27
2.42
2.56
2.70
2.84
2.98
3.11
3.24
3.37
3.50
3.63
3.75
3.87
3.99
4.10
4.22
4.33
4.43
4.54
4.64
4.74
4.84
4.94
5.03
5.12
5.20
5.29
5.37
5.45
5.52
5.59
5.66
5.73
5.79
5.85
5.91
5.96
6.01
6.05
6.10
6.14
6.17
6.20
6.23
6.28
6.31
6.32
6.32
6.30
6.26
6.21
6.14
6.05
5.94
5.82
5.67
5.50
5.32
1.60
2.08
3.00
5.15
0.28
0.52
0.75
0.97
1.19
1.39
1.60
1.79
1.99
2.18
2.37
2.55
2.73
2.91
3.08
3.26
3.42
3.59
3.75
3.91
4.07
4.22
4.38
4.52
4.67
4.81
4.95
5.08
5.22
5.34
5.47
5.59
5.71
5.83
5.94
6.04
6.15
6.25
6.35
6.44
6.53
6.61
6.69
6.77
6.84
6.91
6.97
7.03
7.08
7.13
7.18
7.22
7.26
7.29
7.31
7.33
7.36
7.36
7.35
7.31
7.25
7.16
7.05
6.92
6.76
6.58
6.37
6.13
1.88
2.46
3.54
6.07
0.33
0.61
0.88
1.14
1.39
1.64
1.88
2.12
2.35
2.57
2.79
3.01
3.23
3.44
3.64
3.85
4.05
4.24
4.43
4.62
4.81
4.99
5.17
5.34
5.51
5.67
5.83
5.99
6.14
6.29
6.43
6.57
6.71
6.84
6.96
7.08
7.20
7.31
7.41
7.51
7.61
7.70
7.78
7.86
7.93
8.00
8.06
8.11
8.16
8.20
8.24
8.27
8.29
8.31
8.32
8.32
8.30
8.26
8.19
8.08
7.94
7.78
7.58
7.34
2.03
2.66
3.83
6.55
0.35
0.66
0.95
1.23
1.51
1.77
2.03
2.29
2.54
2.78
3.02
3.26
3.49
3.72
3.94
4.16
4.38
4.59
4.80
5.00
5.20
5.39
5.58
5.77
5.95
6.12
6.30
6.46
6.63
6.78
6.93
7.08
7.22
7.36
7.49
7.61
7.73
7.85
7.95
8.06
8.15
8.24
8.32
8.40
8.47
8.53
8.59
8.63
8.68
8.71
8.74
8.76
8.77
8.77
8.77
8.75
8.71
8.62
8.51
8.35
2.20
2.89
4.16
7.08
0.38
0.71
1.03
1.34
1.63
1.92
2.20
2.48
2.75
3.02
3.28
3.54
3.79
4.04
4.28
4.52
4.75
4.98
5.20
5.42
5.64
5.84
6.05
6.25
6.44
6.63
6.81
6.99
7.16
7.33
7.49
7.64
7.79
7.93
8.07
8.20
8.32
8.43
8.54
8.64
8.73
8.82
8.90
8.97
9.03
9.09
9.13
9.17
9.20
9.22
9.24
9.24
9.23
9.22
9.20
9.16
9.07
8.93
8.76
8.54
2.42
3.17
4.56
7.72
0.42
0.78
1.13
1.47
1.79
2.11
2.42
2.72
3.02
3.31
3.60
3.88
4.16
4.43
4.69
4.95
5.21
5.46
5.70
5.94
6.17
6.40
6.62
6.84
7.04
7.25
7.44
7.63
7.81
7.99
8.16
8.32
8.47
8.61
8.75
8.88
9.00
9.12
9.22
9.32
9.41
9.48
9.55
9.61
9.66
9.70
9.73
9.76
9.77
9.77
9.75
9.73
9.70
9.66
9.60
9.53
9.37
2.63
3.45
4.96
8.34
0.45
0.85
1.23
1.59
1.95
2.29
2.63
2.96
3.29
3.61
3.92
4.22
4.52
4.82
5.11
5.39
5.66
5.93
6.19
6.45
6.70
6.94
7.18
7.41
7.63
7.84
8.05
8.25
8.44
8.62
8.79
8.95
9.11
9.26
9.39
9.52
9.64
9.75
9.85
9.93
10.01
10.08
10.13
10.17
10.21
10.23
10.24
10.23
10.22
10.19
10.15
10.09
10.03
9.95
3.05
4.00
5.75
9.50
0.52
0.98
1.42
1.85
2.26
2.66
3.05
3.44
3.81
4.18
4.54
4.90
5.24
5.58
5.91
6.23
6.55
6.85
7.15
7.44
7.72
7.99
8.25
8.50
8.74
8.97
9.19
9.40
9.60
9.79
9.96
10.12
10.28
10.41
10.54
10.65
10.75
10.83
10.90
10.96
11.00
11.03
11.04
11.03
11.01
10.97
10.92
10.85
10.76
10.65
3.47
4.54
6.51
10.55
0.59
1.12
1.62
2.10
2.57
3.02
3.47
3.91
4.33
4.75
5.16
5.56
5.95
6.32
6.69
7.05
7.40
7.74
8.07
8.38
8.68
8.98
9.26
9.52
9.77
10.01
10.24
10.45
10.64
10.82
10.99
11.14
11.27
11.39
11.48
11.56
11.62
11.67
11.69
11.70
11.68
11.64
11.59
11.51
11.41
SK
Where v > 42 m/s,
please consult our
Applications Engineering
Department
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
0.01
0.01
0.02
0.04
0.00
0.00
0.00
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.04
0.04
0.04
0.04
0.04
0.04
0.04
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.06
0.06
0.06
0.06
0.06
0.06
0.06
0.07
0.07
0.07
0.07
0.07
0.07
0.07
0.08
0.08
0.08
0.08
0.08
0.09
0.09
0.09
0.09
0.10
0.10
0.10
0.11
0.11
0.11
0.11
0.12
0.12
0.06
0.09
0.13
0.26
0.01
0.02
0.03
0.04
0.05
0.06
0.06
0.07
0.08
0.09
0.10
0.11
0.12
0.13
0.14
0.15
0.16
0.17
0.18
0.19
0.19
0.20
0.21
0.22
0.23
0.24
0.25
0.26
0.27
0.28
0.29
0.30
0.31
0.31
0.32
0.33
0.34
0.35
0.36
0.37
0.38
0.39
0.40
0.41
0.42
0.43
0.44
0.44
0.45
0.46
0.47
0.48
0.49
0.50
0.51
0.52
0.54
0.56
0.57
0.59
0.61
0.63
0.65
0.67
0.69
0.70
0.72
0.74
0.76
0.78
power (kW)
speed ratio i
1,27 >1,57
to
1,57
0.09
0.12
0.19
0.37
0.01
0.03
0.04
0.05
0.07
0.08
0.09
0.11
0.12
0.13
0.14
0.16
0.17
0.18
0.20
0.21
0.22
0.24
0.25
0.26
0.28
0.29
0.30
0.32
0.33
0.34
0.35
0.37
0.38
0.39
0.41
0.42
0.43
0.45
0.46
0.47
0.49
0.50
0.51
0.53
0.54
0.55
0.57
0.58
0.59
0.60
0.62
0.63
0.64
0.66
0.67
0.68
0.70
0.71
0.72
0.74
0.76
0.79
0.81
0.84
0.87
0.89
0.92
0.95
0.97
1.00
1.03
1.05
1.08
1.10
0.11
0.15
0.23
0.46
0.02
0.03
0.05
0.06
0.08
0.10
0.11
0.13
0.15
0.16
0.18
0.19
0.21
0.23
0.24
0.26
0.27
0.29
0.31
0.32
0.34
0.35
0.37
0.39
0.40
0.42
0.44
0.45
0.47
0.48
0.50
0.52
0.53
0.55
0.56
0.58
0.60
0.61
0.63
0.64
0.66
0.68
0.69
0.71
0.73
0.74
0.76
0.77
0.79
0.81
0.82
0.84
0.85
0.87
0.89
0.90
0.93
0.97
1.00
1.03
1.06
1.10
1.13
1.16
1.19
1.22
1.26
1.29
1.32
1.35
v (m/s)
Dynamically balanced (for details see DIN 2211)
82
Pulleys
Note: Pulley diameters shown are outside diameters for sections 3V/9N, 3V/9J.
Power Ratings
Section SPA
Nominal Power Rating PN (kW) for β = 180° and Ld = 2500 mm
Statically balanced
v (m/s)
Pulleys
Table 27
nk
Datum diameter of small pulley ddk (mm)
(min-1)
90
100
112
118
125
132
140
150
160
180
200
224
250
280
315
700
950
1450
2850
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
3100
3200
3300
3400
3500
3600
3700
3800
3900
4000
4100
4200
4300
4400
4500
4600
4700
4800
4900
5000
5100
5200
5300
5400
5500
5600
5700
5800
5900
6000
6100
6200
6300
6400
6500
6600
6700
6800
6900
7000
1.17
1.49
2.04
3.14
0.23
0.42
0.59
0.75
0.90
1.04
1.17
1.30
1.43
1.55
1.66
1.77
1.88
1.99
2.09
2.19
2.28
2.37
2.46
2.54
2.62
2.70
2.78
2.85
2.92
2.99
3.05
3.11
3.16
3.22
3.26
3.31
3.35
3.39
3.43
3.46
3.49
3.51
3.53
3.55
3.57
3.58
3.58
3.58
3.58
3.58
3.57
3.55
3.53
3.51
3.48
3.45
3.42
3.38
3.33
3.28
3.23
3.17
3.11
3.04
2.96
2.89
2.80
2.71
2.62
2.52
2.42
2.31
2.19
2.07
1.55
1.98
2.76
4.40
0.30
0.54
0.76
0.97
1.17
1.36
1.55
1.72
1.90
2.06
2.23
2.38
2.54
2.69
2.83
2.97
3.11
3.24
3.37
3.50
3.62
3.74
3.85
3.96
4.07
4.17
4.27
4.36
4.45
4.53
4.61
4.69
4.76
4.83
4.89
4.95
5.01
5.06
5.10
5.14
5.17
5.20
5.23
5.25
5.26
5.27
5.27
5.27
5.26
5.25
5.23
5.21
5.18
5.14
5.10
5.05
4.99
4.93
4.86
4.79
4.70
4.62
4.52
4.42
4.31
4.19
4.07
3.94
3.80
3.66
1.99
2.57
3.62
5.88
0.37
0.68
0.96
1.24
1.50
1.75
1.99
2.23
2.45
2.68
2.90
3.11
3.31
3.52
3.71
3.91
4.09
4.27
4.45
4.62
4.79
4.95
5.11
5.26
5.41
5.55
5.69
5.82
5.94
6.06
6.18
6.29
6.39
6.49
6.58
6.66
6.74
6.81
6.88
6.94
6.99
7.04
7.08
7.11
7.13
7.15
7.16
7.16
7.16
7.15
7.13
7.10
7.06
7.02
6.96
6.90
6.83
6.75
6.66
6.57
6.46
6.34
6.22
6.09
5.94
5.79
5.62
5.45
5.27
5.07
2.21
2.86
4.04
6.60
0.40
0.75
1.07
1.37
1.66
1.94
2.21
2.47
2.73
2.98
3.23
3.47
3.70
3.93
4.15
4.37
4.58
4.78
4.98
5.18
5.37
5.55
5.73
5.90
6.07
6.23
6.38
6.53
6.67
6.81
6.94
7.06
7.18
7.29
7.39
7.48
7.57
7.65
7.73
7.79
7.85
7.90
7.95
7.98
8.01
8.03
8.04
8.04
8.03
8.01
7.99
7.95
7.91
7.85
7.79
7.71
7.63
7.54
7.43
7.32
7.19
7.06
6.91
6.75
6.58
6.40
6.21
6.01
5.79
5.56
2.47
3.20
4.53
7.43
0.45
0.83
1.18
1.52
1.85
2.16
2.47
2.76
3.05
3.34
3.61
3.88
4.15
4.40
4.65
4.90
5.14
5.37
5.60
5.82
6.03
6.24
6.44
6.63
6.82
7.00
7.18
7.34
7.50
7.66
7.80
7.94
8.07
8.19
8.31
8.41
8.51
8.60
8.68
8.75
8.81
8.87
8.91
8.95
8.97
8.99
8.99
8.99
8.97
8.95
8.91
8.86
8.80
8.73
8.65
8.56
8.45
8.34
8.21
8.07
7.92
7.75
7.57
7.38
7.17
6.95
6.72
6.48
6.22
5.94
2.72
3.53
5.02
8.23
0.49
0.91
1.30
1.67
2.03
2.38
2.72
3.05
3.37
3.69
4.00
4.30
4.59
4.87
5.15
5.43
5.69
5.95
6.20
6.45
6.69
6.92
7.14
7.36
7.56
7.76
7.96
8.14
8.32
8.49
8.64
8.80
8.94
9.07
9.19
9.31
9.41
9.50
9.59
9.66
9.73
9.78
9.82
9.85
9.87
9.88
9.88
9.86
9.84
9.80
9.74
9.68
9.60
9.51
9.41
9.29
9.16
9.01
8.85
8.68
8.49
8.29
8.07
7.84
7.59
3.01
3.91
5.57
9.13
0.54
1.00
1.43
1.85
2.25
2.63
3.01
3.38
3.74
4.09
4.43
4.76
5.09
5.41
5.72
6.02
6.32
6.61
6.89
7.16
7.42
7.68
7.93
8.17
8.39
8.62
8.83
9.03
9.22
9.41
9.58
9.74
9.89
10.03
10.17
10.28
10.39
10.49
10.57
10.65
10.71
10.76
10.79
10.81
10.82
10.82
10.80
10.77
10.72
10.66
10.58
10.49
10.39
10.27
10.13
9.97
9.80
9.62
9.42
9.20
8.96
8.70
8.43
8.14
7.83
3.37
4.39
6.25
10.21
0.60
1.11
1.60
2.06
2.51
2.95
3.37
3.78
4.19
4.58
4.97
5.34
5.71
6.07
6.42
6.76
7.09
7.42
7.73
8.03
8.33
8.61
8.89
9.15
9.41
9.65
9.88
10.11
10.32
10.51
10.70
10.87
11.03
11.18
11.32
11.44
11.55
11.64
11.72
11.79
11.84
11.87
11.89
11.90
11.88
11.86
11.81
11.75
11.67
11.57
11.45
11.32
11.17
11.00
10.81
10.60
10.37
10.12
9.84
9.55
3.73
4.86
6.92
11.25
0.65
1.22
1.76
2.28
2.77
3.26
3.73
4.19
4.64
5.07
5.50
5.92
6.33
6.72
7.11
7.49
7.86
8.21
8.56
8.89
9.22
9.53
9.83
10.12
10.39
10.65
10.90
11.14
11.36
11.57
11.77
11.95
12.11
12.26
12.40
12.52
12.62
12.70
12.77
12.82
12.85
12.87
12.86
12.84
12.80
12.73
12.65
12.55
12.43
12.28
12.11
11.92
11.71
11.48
11.22
4.44
5.78
8.24
13.21
0.77
1.45
2.09
2.70
3.30
3.87
4.44
4.99
5.52
6.04
6.55
7.05
7.54
8.01
8.47
8.91
9.34
9.76
10.17
10.55
10.93
11.29
11.63
11.95
12.26
12.56
12.83
13.09
13.32
13.54
13.74
13.92
14.07
14.21
14.32
14.42
14.48
14.53
14.55
14.55
14.52
14.47
14.39
14.28
14.15
13.99
13.80
13.58
13.33
13.05
5.14
6.70
9.52
14.97
0.89
1.67
2.41
3.12
3.81
4.48
5.14
5.77
6.39
7.00
7.59
8.16
8.72
9.26
9.79
10.29
10.78
11.25
11.71
12.14
12.56
12.95
13.32
13.67
14.00
14.31
14.59
14.85
15.08
15.29
15.47
15.62
15.75
15.84
15.91
15.95
15.95
15.93
15.87
15.78
15.66
15.50
15.30
15.07
14.80
5.97
7.78
11.02
16.81
1.03
1.94
2.80
3.63
4.43
5.21
5.97
6.71
7.43
8.12
8.80
9.46
10.10
10.72
11.32
11.89
12.44
12.97
13.47
13.94
14.39
14.81
15.20
15.57
15.90
16.20
16.47
16.70
16.90
17.07
17.20
17.29
17.34
17.35
17.33
17.26
17.15
16.99
16.79
16.54
6.85
8.92
12.58
18.43
1.18
2.22
3.21
4.16
5.09
5.98
6.85
7.70
8.52
9.32
10.09
10.84
11.55
12.25
12.91
13.54
14.14
14.71
15.25
15.75
16.22
16.65
17.04
17.39
17.70
17.96
18.19
18.36
18.49
18.57
18.60
18.58
18.51
18.38
18.20
7.86
10.21
14.30
19.78
1.35
2.55
3.68
4.78
5.84
6.86
7.86
8.82
9.76
10.66
11.53
12.37
13.17
13.93
14.66
15.34
15.99
16.59
17.14
17.65
18.11
18.52
18.87
19.17
19.41
19.60
19.72
19.78
19.77
19.70
9.01
11.68
16.18
20.57
1.55
2.92
4.23
5.49
6.70
7.88
9.01
10.11
11.17
12.18
13.15
14.08
14.96
15.79
16.56
17.29
17.95
18.56
19.10
19.57
19.98
20.32
20.58
20.77
20.87
20.90
20.83
20.68
20.44
SK
Where v > 42 m/s,
please consult our
Applications Engineering
Department
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
0.02
0.03
0.05
0.09
0.00
0.01
0.01
0.01
0.02
0.02
0.02
0.03
0.03
0.03
0.04
0.04
0.04
0.05
0.05
0.05
0.06
0.06
0.06
0.07
0.07
0.07
0.08
0.08
0.08
0.09
0.09
0.09
0.10
0.10
0.10
0.11
0.11
0.11
0.12
0.12
0.12
0.13
0.13
0.13
0.14
0.14
0.14
0.15
0.15
0.15
0.16
0.16
0.16
0.17
0.17
0.17
0.18
0.18
0.18
0.19
0.19
0.19
0.20
0.20
0.20
0.21
0.21
0.21
0.22
0.22
0.22
0.23
0.23
0.23
power (kW)
speed ratio i
1,27 >1,57
to
1,57
0.15 0.21
0.20 0.29
0.31 0.44
0.61 0.87
0.02 0.03
0.04 0.06
0.06 0.09
0.09 0.12
0.11 0.15
0.13 0.18
0.15 0.21
0.17 0.24
0.19 0.27
0.22 0.31
0.24 0.34
0.26 0.37
0.28 0.40
0.30 0.43
0.32 0.46
0.34 0.49
0.37 0.52
0.39 0.55
0.41 0.58
0.43 0.61
0.45 0.64
0.47 0.67
0.50 0.70
0.52 0.73
0.54 0.76
0.56 0.79
0.58 0.82
0.60 0.86
0.62 0.89
0.65 0.92
0.67 0.95
0.69 0.98
0.71 1.01
0.73 1.04
0.75 1.07
0.77 1.10
0.80 1.13
0.82 1.16
0.84 1.19
0.86 1.22
0.88 1.25
0.90 1.28
0.93 1.31
0.95 1.34
0.97 1.37
0.99 1.41
1.01 1.44
1.03 1.47
1.05 1.50
1.08 1.53
1.10 1.56
1.12 1.59
1.14 1.62
1.16 1.65
1.18 1.68
1.21 1.71
1.23 1.74
1.25 1.77
1.27 1.80
1.29 1.83
1.31 1.86
1.33 1.89
1.36 1.92
1.38 1.96
1.40 1.99
1.42 2.02
1.44 2.05
1.46 2.08
1.49 2.11
1.51 2.14
0.26
0.36
0.54
1.07
0.04
0.07
0.11
0.15
0.19
0.22
0.26
0.30
0.34
0.37
0.41
0.45
0.49
0.52
0.56
0.60
0.64
0.67
0.71
0.75
0.79
0.82
0.86
0.90
0.94
0.97
1.01
1.05
1.09
1.12
1.16
1.20
1.24
1.27
1.31
1.35
1.39
1.42
1.46
1.50
1.54
1.57
1.61
1.65
1.69
1.72
1.76
1.80
1.84
1.87
1.91
1.95
1.99
2.02
2.06
2.10
2.13
2.17
2.21
2.25
2.28
2.32
2.36
2.40
2.43
2.47
2.51
2.55
2.58
2.62
v (m/s)
Dynamically balanced (for details see DIN 2211)
Pulleys
83
Power Ratings
Section SPB, 5V/15N, 5V/15J
Nominal Power Rating PN (kW) for β = 180° and Ld = 3550 mm
Statically balanced
v (m/s)
Pulleys
Table 28
nk
Datum diameter of small pulley ddk (mm)
(min-1)
140
150
160
180
190
200
212
224
236
250
280
315
700
950
1450
2850
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
3100
3200
3300
3400
3500
3600
3700
3800
3900
4000
4100
4200
4300
4400
4500
4600
4700
4800
4900
5000
5100
5200
5300
5400
5500
3.46
4.42
6.09
9.07
0.66
1.21
1.71
2.17
2.62
3.05
3.46
3.85
4.23
4.60
4.95
5.29
5.62
5.94
6.24
6.54
6.82
7.08
7.34
7.58
7.81
8.02
8.22
8.41
8.58
8.74
8.88
9.01
9.12
9.22
9.30
9.36
9.41
9.44
9.45
9.45
9.42
9.38
9.31
9.23
9.13
9.01
8.86
8.70
8.51
8.30
8.07
7.82
7.54
7.24
6.92
6.57
6.19
5.79
5.37
4.04
5.19
7.20
10.83
0.76
1.39
1.97
2.52
3.05
3.55
4.04
4.51
4.96
5.40
5.83
6.24
6.63
7.01
7.38
7.73
8.07
8.40
8.71
9.00
9.28
9.54
9.79
10.02
10.23
10.42
10.60
10.76
10.90
11.02
11.12
11.21
11.27
11.31
11.33
11.33
11.30
11.25
11.18
11.09
10.97
10.82
10.65
10.46
10.24
9.99
9.72
9.41
9.08
8.72
8.33
7.91
7.46
6.98
6.47
4.62
5.95
8.29
12.53
0.85
1.57
2.24
2.87
3.48
4.06
4.62
5.17
5.69
6.20
6.69
7.17
7.63
8.08
8.51
8.92
9.31
9.69
10.05
10.39
10.72
11.03
11.31
11.58
11.83
12.06
12.26
12.45
12.61
12.75
12.86
12.96
13.02
13.07
13.08
13.08
13.04
12.98
12.89
12.77
12.62
12.44
12.23
11.99
11.72
11.42
11.08
10.72
10.31
9.87
9.40
8.89
8.34
7.76
7.14
5.77
7.46
10.44
15.71
1.04
1.94
2.77
3.56
4.32
5.06
5.77
6.46
7.13
7.78
8.41
9.01
9.60
10.16
10.71
11.23
11.73
12.21
12.67
13.10
13.51
13.89
14.24
14.57
14.88
15.15
15.39
15.61
15.79
15.95
16.07
16.16
16.21
16.23
16.22
16.17
16.08
15.95
15.78
15.58
15.33
15.04
14.71
14.33
13.92
13.45
12.94
12.38
11.78
11.13
6.34
8.20
11.49
17.18
1.14
2.12
3.03
3.91
4.75
5.56
6.34
7.10
7.84
8.56
9.25
9.92
10.57
11.19
11.79
12.36
12.91
13.44
13.93
14.41
14.85
15.26
15.64
16.00
16.32
16.61
16.86
17.08
17.27
17.42
17.53
17.60
17.63
17.63
17.58
17.49
17.36
17.18
16.95
16.68
16.36
16.00
15.58
15.11
14.60
6.91
8.94
12.53
18.57
1.23
2.30
3.29
4.25
5.16
6.05
6.91
7.74
8.55
9.33
10.09
10.82
11.52
12.20
12.85
13.48
14.07
14.64
15.18
15.68
16.15
16.59
17.00
17.37
17.70
18.00
18.26
18.48
18.66
18.79
18.88
18.93
18.93
18.89
18.80
18.66
18.47
18.22
17.93
17.58
17.17
16.71
16.19
15.62
14.98
7.59
9.82
13.76
20.13
1.35
2.51
3.61
4.66
5.66
6.64
7.59
8.50
9.39
10.25
11.08
11.88
12.65
13.40
14.11
14.79
15.44
16.05
16.63
17.17
17.67
18.14
18.57
18.95
19.29
19.59
19.84
20.05
20.20
20.31
20.37
20.38
20.33
20.22
20.06
19.84
19.57
19.23
18.83
18.36
8.26
10.69
14.96
21.57
1.46
2.73
3.92
5.06
6.16
7.23
8.26
9.26
10.22
11.16
12.06
12.93
13.77
14.57
15.34
16.07
16.77
17.42
18.04
18.61
19.14
19.62
20.06
20.45
20.79
21.08
21.31
21.50
21.62
21.69
21.70
21.64
21.53
21.35
21.10
20.78
20.40
19.94
19.41
18.81
8.92
11.56
16.15
22.87
1.57
2.94
4.23
5.47
6.66
7.81
8.92
10.00
11.05
12.06
13.03
13.97
14.87
15.73
16.55
17.33
18.07
18.76
19.40
20.00
20.55
21.04
21.48
21.87
22.20
22.47
22.67
22.82
22.90
22.91
22.85
22.72
22.52
22.25
21.90
9.70
12.56
17.50
24.21
1.70
3.19
4.59
5.94
7.23
8.48
9.70
10.87
12.00
13.10
14.15
15.16
16.13
17.06
17.93
18.76
19.54
20.27
20.94
21.56
22.11
22.61
23.05
23.41
23.72
23.95
24.11
24.19
24.20
24.13
23.98
23.74
23.42
23.01
22.51
11.33
14.66
20.30
26.40
1.98
3.72
5.36
6.93
8.45
9.92
11.33
12.70
14.02
15.28
16.50
17.65
18.76
19.80
20.78
21.69
22.54
23.31
24.02
24.64
25.19
25.65
26.03
26.31
26.50
26.60
26.60
26.49
26.28
25.96
13.21
17.04
23.36
27.68
2.30
4.33
6.24
8.08
9.85
11.56
13.21
14.79
16.30
17.75
19.13
20.44
21.67
22.82
23.88
24.86
25.74
26.52
27.20
27.77
28.24
28.58
28.81
28.91
28.88
28.71
28.41
27.96
27.36
355
375
400
15.30 16.33 17.59
19.67 20.94 22.50
26.59 28.08 29.83
2.66
5.02
7.25
9.38
11.43
13.41
15.30
17.11
18.84
20.47
22.01
23.46
24.79
26.02
27.12
28.11
28.96
29.68
30.25
30.68
30.94
31.05
30.98
30.74
30.31
2.84
5.36
7.74
10.03
12.22
14.32
16.33
18.25
20.07
21.79
23.40
24.89
26.26
27.51
28.62
29.58
30.39
31.04
31.53
31.84
31.96
31.90
31.63
31.16
3.07
5.79
8.36
10.82
13.18
15.44
17.59
19.64
21.57
23.39
25.07
26.62
28.02
29.27
30.35
31.26
31.99
32.53
32.86
32.99
32.89
32.57
SK
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
power (kW)
speed ratio i
1,27 >1,57
to
1,57
0.05 0.33 0.47
0.07 0.45 0.64
0.11 0.69 0.97
0.21 1.35 1.92
0.01 0.05 0.07
0.01 0.09 0.13
0.02 0.14 0.20
0.03 0.19 0.27
0.04 0.24 0.34
0.04 0.28 0.40
0.05 0.33 0.47
0.06 0.38 0.54
0.07 0.43 0.61
0.07 0.47 0.67
0.08 0.52 0.74
0.09 0.57 0.81
0.10 0.62 0.87
0.10 0.66 0.94
0.11 0.71 1.01
0.12 0.76 1.08
0.12 0.81 1.14
0.13 0.85 1.21
0.14 0.90 1.28
0.15 0.95 1.34
0.15 0.99 1.41
0.16 1.04 1.48
0.17 1.09 1.55
0.18 1.14 1.61
0.18 1.18 1.68
0.19 1.23 1.75
0.20 1.28 1.82
0.21 1.33 1.88
0.21 1.37 1.95
0.22 1.42 2.02
0.23 1.47 2.08
0.23 1.52 2.15
0.24 1.56 2.22
0.25 1.61 2.29
0.26 1.66 2.35
0.26 1.71 2.42
0.27 1.75 2.49
0.28 1.80 2.55
0.29 1.85 2.62
0.29 1.89 2.69
0.30 1.94 2.76
0.31 1.99 2.82
0.32 2.04 2.89
0.32 2.08 2.96
0.33 2.13 3.03
0.34 2.18 3.09
0.34 2.23 3.16
0.35 2.27 3.23
0.36 2.32 3.29
0.37 2.37 3.36
0.37 2.42 3.43
0.38 2.46 3.50
0.39 2.51 3.56
0.40 2.56 3.63
0.40 2.61 3.70
0.58
0.78
1.20
2.35
0.08
0.16
0.25
0.33
0.41
0.49
0.58
0.66
0.74
0.82
0.91
0.99
1.07
1.15
1.24
1.32
1.40
1.48
1.57
1.65
1.73
1.81
1.90
1.98
2.06
2.14
2.23
2.31
2.39
2.47
2.56
2.64
2.72
2.80
2.89
2.97
3.05
3.13
3.21
3.30
3.38
3.46
3.54
3.63
3.71
3.79
3.87
3.96
4.04
4.12
4.20
4.29
4.37
4.45
4.53
Where v > 42 m/s,
please consult our
Applications Engineering
Department
v (m/s)
Dynamically balanced (for details see DIN 2211)
84
Pulleys
Note: Pulley diameters shown are outside diameters for sections 5V/15N, 5V/15J.
Power Ratings
Section SPC
Nominal Power Rating PN (kW) for β = 180° and Ld = 5600 mm
Statically balanced
v (m/s)
Pulleys
Table 29
nk
Datum diameter of small pulley ddk (mm)
(min-1)
224
250
280
300
315
335
355
375
400
450
500
560
630
710
700
950
1450
2850
50
100
200
300
350
400
450
500
550
600
650
700
750
800
850
900
950
1000
1050
1100
1150
1200
1250
1300
1350
1400
1450
1500
1550
1600
1650
1700
1750
1800
1850
1900
1950
2000
2050
2100
2150
2200
2250
2300
2350
2400
2450
2500
2550
2600
2650
2700
2750
2800
2850
2900
2950
3000
3050
3100
3150
3200
3250
3300
3350
3400
3450
3500
10.46
13.27
17.79
20.63
1.08
1.99
3.64
5.16
5.89
6.59
7.28
7.95
8.60
9.23
9.85
10.46
11.05
11.63
12.19
12.74
13.27
13.79
14.30
14.79
15.26
15.72
16.17
16.60
17.01
17.41
17.79
18.16
18.51
18.84
19.16
19.45
19.73
19.99
20.24
20.46
20.66
20.85
21.01
21.16
21.28
21.38
21.46
21.52
21.56
21.57
21.57
21.53
21.48
21.40
21.30
21.17
21.02
20.84
20.63
20.40
20.14
19.86
19.55
19.21
18.84
18.44
18.02
17.56
17.08
16.56
16.02
15.44
13.11
16.71
22.48
25.52
1.31
2.44
4.49
6.40
7.31
8.20
9.07
9.91
10.74
11.55
12.34
13.11
13.87
14.60
15.32
16.02
16.71
17.37
18.02
18.64
19.25
19.84
20.41
20.96
21.49
21.99
22.48
22.94
23.39
23.81
24.20
24.58
24.92
25.25
25.55
25.82
26.07
26.29
26.49
26.66
26.79
26.91
26.99
27.04
27.06
27.05
27.02
26.94
26.84
26.71
26.54
26.33
26.10
25.83
25.52
25.18
24.80
24.38
23.93
23.43
22.90
22.33
21.72
21.07
20.38
19.65
18.87
18.05
16.13
20.58
27.64
29.58
1.58
2.94
5.46
7.81
8.94
10.04
11.11
12.16
13.19
14.19
15.17
16.13
17.06
17.98
18.87
19.74
20.58
21.40
22.20
22.97
23.72
24.44
25.13
25.80
26.44
27.06
27.64
28.20
28.72
29.22
29.68
30.11
30.51
30.88
31.21
31.51
31.77
31.99
32.18
32.34
32.45
32.52
32.56
32.55
32.50
32.41
32.28
32.10
31.88
31.62
31.30
30.94
30.54
30.08
29.58
29.03
28.42
27.77
27.06
26.30
25.49
24.62
23.69
18.11
23.11
30.92
31.27
1.75
3.28
6.11
8.75
10.01
11.25
12.46
13.64
14.80
15.93
17.03
18.11
19.16
20.19
21.19
22.16
23.11
24.03
24.91
25.77
26.61
27.41
28.17
28.91
29.62
30.29
30.92
31.53
32.09
32.62
33.11
33.56
33.98
34.35
34.68
34.97
35.22
35.42
35.58
35.69
35.76
35.78
35.75
35.67
35.54
35.36
35.13
34.84
34.50
34.10
33.65
33.14
32.58
19.58
24.97
33.30
31.96
1.89
3.53
6.59
9.44
10.82
12.16
13.47
14.75
16.00
17.22
18.42
19.58
20.72
21.83
22.91
23.96
24.97
25.96
26.92
27.84
28.73
29.58
30.40
31.18
31.93
32.63
33.30
33.93
34.52
35.06
35.56
36.02
36.43
36.80
37.12
37.39
37.61
37.79
37.91
37.97
37.99
37.95
37.85
37.70
37.49
37.22
36.89
36.50
36.05
35.53
34.95
34.30
33.59
21.52
27.42
36.35
23.44
29.82
39.26
25.34
32.18
42.02
27.68
35.05
45.25
32.24
40.55
50.94
36.64
45.70
55.51
41.70
51.38
59.36
47.28
57.27
61.37
53.19
62.91
2.06
3.87
7.22
10.37
11.88
13.36
14.80
16.21
17.59
18.93
20.24
21.52
22.77
23.99
25.17
26.31
27.42
28.50
29.53
30.53
31.49
32.41
33.28
34.12
34.91
35.65
36.35
37.00
37.61
38.16
38.66
39.11
39.51
39.85
40.14
40.37
40.54
40.65
40.69
40.68
40.60
40.46
40.25
39.97
39.63
39.21
38.72
38.16
2.23
4.20
7.86
11.29
12.94
14.55
16.12
17.66
19.16
20.62
22.05
23.44
24.80
26.11
27.39
28.63
29.82
30.98
32.09
33.16
34.18
35.15
36.07
36.95
37.77
38.54
39.26
39.92
40.53
41.07
41.56
41.98
42.35
42.64
42.87
43.04
43.13
43.16
43.11
42.99
42.79
42.51
42.16
41.73
41.21
40.61
39.93
39.16
2.41
4.53
8.49
12.21
13.99
15.73
17.44
19.10
20.72
22.30
23.84
25.34
26.80
28.21
29.58
30.90
32.18
33.41
34.58
35.71
36.78
37.80
38.76
39.67
40.52
41.30
42.02
42.68
43.27
43.79
44.24
44.62
44.93
45.16
45.32
45.39
45.39
45.30
45.13
44.87
44.52
44.08
43.55
2.62
4.95
9.28
13.34
15.30
17.21
19.07
20.88
22.65
24.37
26.05
27.68
29.26
30.78
32.26
33.68
35.05
36.36
37.61
38.80
39.93
40.99
41.98
42.91
43.77
44.55
45.25
45.88
46.43
46.90
47.29
47.58
47.79
47.91
47.94
47.87
47.70
47.44
47.07
46.60
46.02
45.33
44.53
3.05
5.77
10.84
15.60
17.88
20.11
22.28
24.39
26.44
28.44
30.37
32.24
34.04
35.77
37.44
39.03
40.55
41.99
43.34
44.62
45.81
46.90
47.91
48.82
49.63
50.34
50.94
51.44
51.83
52.10
52.25
52.28
52.19
51.97
51.62
51.14
50.52
49.76
3.48
6.58
12.38
17.83
20.44
22.97
25.44
27.83
30.15
32.39
34.56
36.64
38.64
40.54
42.36
44.08
45.70
47.21
48.62
49.92
51.10
52.16
53.10
53.90
54.58
55.12
55.51
55.76
55.86
55.81
55.59
55.21
54.67
3.99
7.56
14.22
20.47
23.45
26.35
29.15
31.86
34.48
36.99
39.40
41.70
43.89
45.95
47.89
49.71
51.38
52.92
54.30
55.54
56.61
57.52
58.25
58.81
59.19
59.37
59.36
59.15
4.58
8.68
16.34
23.50
26.90
30.20
33.37
36.42
39.34
42.13
44.78
47.28
49.62
51.80
53.80
55.63
57.27
58.71
59.94
60.96
61.76
62.33
62.65
62.73
62.55
62.10
61.37
5.25
9.95
18.73
26.90
30.77
34.48
38.04
41.44
44.66
47.70
50.55
53.19
55.61
57.81
59.77
61.47
62.91
64.08
64.95
65.53
65.79
65.72
65.31
SK
Where v > 42 m/s,
please consult our
Applications Engineering
Department
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
0.14
0.19
0.29
0.57
0.01
0.02
0.04
0.06
0.07
0.08
0.09
0.10
0.11
0.12
0.13
0.14
0.15
0.16
0.17
0.18
0.19
0.20
0.21
0.22
0.23
0.24
0.25
0.26
0.27
0.28
0.29
0.30
0.31
0.32
0.33
0.34
0.35
0.36
0.37
0.38
0.39
0.40
0.41
0.42
0.43
0.44
0.45
0.46
0.47
0.48
0.49
0.50
0.51
0.52
0.53
0.54
0.55
0.56
0.57
0.58
0.59
0.60
0.61
0.62
0.63
0.64
0.65
0.66
0.67
0.68
0.69
0.70
0.90
1.22
1.86
3.67
0.06
0.13
0.26
0.39
0.45
0.51
0.58
0.64
0.71
0.77
0.84
0.90
0.96
1.03
1.09
1.16
1.22
1.29
1.35
1.41
1.48
1.54
1.61
1.67
1.74
1.80
1.86
1.93
1.99
2.06
2.12
2.19
2.25
2.31
2.38
2.44
2.51
2.57
2.64
2.70
2.77
2.83
2.89
2.96
3.02
3.09
3.15
3.22
3.28
3.34
3.41
3.47
3.54
3.60
3.67
3.73
3.79
3.86
3.92
3.99
4.05
4.12
4.18
4.24
4.31
4.37
4.44
4.50
power (kW)
speed ratio i
1,27 >1,57
to
1,57
1.28
1.73
2.65
5.20
0.09
0.18
0.37
0.55
0.64
0.73
0.82
0.91
1.00
1.10
1.19
1.28
1.37
1.46
1.55
1.64
1.73
1.83
1.92
2.01
2.10
2.19
2.28
2.37
2.46
2.56
2.65
2.74
2.83
2.92
3.01
3.10
3.19
3.29
3.38
3.47
3.56
3.65
3.74
3.83
3.92
4.02
4.11
4.20
4.29
4.38
4.47
4.56
4.66
4.75
4.84
4.93
5.02
5.11
5.20
5.29
5.39
5.48
5.57
5.66
5.75
5.84
5.93
6.02
6.12
6.21
6.30
6.39
1.57
2.13
3.25
6.38
0.11
0.22
0.45
0.67
0.78
0.90
1.01
1.12
1.23
1.34
1.45
1.57
1.68
1.79
1.90
2.01
2.13
2.24
2.35
2.46
2.57
2.69
2.80
2.91
3.02
3.13
3.25
3.36
3.47
3.58
3.69
3.80
3.92
4.03
4.14
4.25
4.36
4.48
4.59
4.70
4.81
4.92
5.04
5.15
5.26
5.37
5.48
5.60
5.71
5.82
5.93
6.04
6.16
6.27
6.38
6.49
6.60
6.71
6.83
6.94
7.05
7.16
7.27
7.39
7.50
7.61
7.72
7.83
v (m/s)
Dynamically balanced (for details see DIN 2211)
Pulleys
85
Power Ratings
Section 8V/25N, 8V/25J
Nominal Power Rating PN (kW) for β = 180° and 8V 2500/6350 mm La
Statically balanced
v (m/s)
Pulleys
Table 30
nk
Datum diameter of small pulley ddk (mm)
(min-1)
335
355
375
425
450
475
500
530
560
600
630
710
800
700
950
1450
50
100
150
200
250
300
350
400
450
500
550
600
650
700
750
800
850
900
950
1000
1050
1100
1150
1200
1250
1300
1350
1400
1450
1500
1550
1600
1650
1700
1750
1800
1850
1900
1950
2000
2050
2100
2150
2200
2250
25.67
32.09
40.47
2.63
4.87
6.97
8.97
10.89
12.74
14.54
16.28
17.97
19.61
21.20
22.74
24.23
25.67
27.06
28.40
29.68
30.91
32.09
33.21
34.27
35.27
36.21
37.09
37.90
38.65
39.33
39.93
40.47
40.93
41.31
41.62
41.85
41.99
42.05
42.03
41.92
41.72
41.42
41.04
40.55
39.97
39.29
38.50
37.62
28.61
35.77
44.90
2.89
5.38
7.71
9.94
12.08
14.15
16.16
18.11
20.00
21.83
23.61
25.33
27.00
28.61
30.16
31.66
33.09
34.46
35.77
37.01
38.18
39.29
40.32
41.28
42.16
42.97
43.70
44.34
44.90
45.37
45.75
46.04
46.24
46.34
46.35
46.25
46.05
45.74
45.32
44.79
44.15
43.40
42.52
41.53
40.41
31.52
39.37
49.10
3.16
5.89
8.46
10.91
13.27
15.56
17.78
19.93
22.01
24.04
26.00
27.90
29.74
31.52
33.23
34.87
36.44
37.94
39.37
40.72
42.00
43.19
44.30
45.33
46.27
47.12
47.88
48.54
49.10
49.56
49.91
50.16
50.30
50.33
50.24
50.04
49.71
49.26
48.69
47.98
47.14
46.16
45.05
43.79
42.40
38.62
48.03
58.51
3.82
7.15
10.30
13.31
16.22
19.04
21.77
24.42
26.99
29.48
31.89
34.22
36.46
38.62
40.69
42.67
44.56
46.34
48.03
49.61
51.09
52.45
53.69
54.82
55.82
56.69
57.44
58.04
58.51
58.84
59.01
59.04
58.90
58.61
58.15
57.52
56.72
55.74
54.58
53.23
42.08
52.17
62.60
4.15
7.78
11.22
14.51
17.68
20.76
23.74
26.64
29.44
32.16
34.78
37.31
39.75
42.08
44.32
46.45
48.47
50.38
52.17
53.84
55.38
56.79
58.06
59.20
60.19
61.03
61.71
62.24
62.60
62.80
62.81
62.65
62.31
61.77
61.05
60.12
58.98
57.64
56.08
54.31
45.49
56.17
66.25
4.48
8.41
12.13
15.69
19.14
22.47
25.71
28.84
31.87
34.81
37.64
40.36
42.98
45.49
47.87
50.14
52.28
54.29
56.17
57.90
59.49
60.93
62.20
63.32
64.27
65.04
65.63
66.04
66.25
66.27
66.08
65.69
65.08
64.25
63.19
48.82
60.03
69.44
4.80
9.03
13.03
16.88
20.59
24.18
27.66
31.02
34.28
37.43
40.46
43.37
46.16
48.82
51.35
53.74
55.99
58.09
60.03
61.81
63.42
64.85
66.11
67.17
68.04
68.71
69.17
69.42
69.44
69.24
68.80
68.11
67.18
65.99
64.54
52.74
64.47
72.63
5.19
9.78
14.12
18.29
22.31
26.21
29.98
33.62
37.14
40.54
43.80
46.92
49.91
52.74
55.42
57.94
60.30
62.47
64.47
66.27
67.87
69.27
70.46
71.42
72.16
72.65
72.90
72.90
72.63
56.57
68.68
75.10
5.58
10.52
15.20
19.69
24.03
28.22
32.28
36.19
39.97
43.60
47.08
50.41
53.57
56.57
59.38
62.01
64.44
66.67
68.68
70.48
72.04
73.36
74.44
75.25
75.80
76.06
76.04
75.72
75.10
61.51
73.95
77.18
6.10
11.51
16.63
21.56
26.30
30.89
35.32
39.58
43.69
47.62
51.38
54.95
58.33
61.51
64.46
67.20
69.70
71.95
73.95
75.68
77.12
78.28
79.13
79.66
79.87
79.74
79.25
65.09
77.62
77.79
6.48
12.24
17.70
22.94
28.00
32.87
37.57
42.10
46.44
50.59
54.54
58.28
61.80
65.09
68.13
70.92
73.44
75.67
77.62
79.25
80.56
81.53
82.16
82.42
82.31
81.80
80.89
79.56
77.79
74.10
86.13
0.59
7.51
14.19
20.53
26.61
32.46
38.09
43.49
48.66
53.59
58.27
62.67
66.79
70.61
74.10
77.26
80.06
82.49
84.52
86.13
87.31
88.04
88.30
88.06
87.31
86.03
83.23
93.33
3.79
8.65
16.37
23.68
30.68
37.40
43.84
49.98
55.82
61.33
66.50
71.30
75.70
79.69
83.23
86.31
88.88
90.92
92.42
93.33
93.63
93.28
92.28
90.56
88.14
SK
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
0.28 1.83
0.38 2.48
5.38 6.60
0.02 0.13
0.04 0.26
0.06 0.39
0.08 0.52
0.10 0.65
0.12 0.78
0.14 0.91
0.16 1.05
0.18 1.18
0.20 1.31
0.22 1.44
0.24 1.57
0.26 1.70
0.28 1.83
0.30 1.96
0.32 2.09
0.34 2.22
0.36 2.35
0.38 2.48
0.40 2.61
0.42 2.74
0.44 2.88
0.46 3.01
0.49 3.14
0.51 3.27
0.53 3.40
0.55 3.53
0.57 3.66
0.59 3.79
0.61 3.92
0.63 4.05
0.65 4.18
0.67 4.31
0.69 4.44
0.71 4.57
0.73 4.70
0.75 4.84
0.77 4.97
0.79 5.10
0.81 5.23
0.83 5.36
0.85 5.49
0.87 5.62
0.89 5.75
0.91 5.88
power (kW)
speed ratio i
1,27 >1,57
to
1,57
2.60
3.52
3.18
4.32
0.19
0.37
0.56
0.74
0.93
1.11
1.30
1.48
1.67
1.86
2.04
2.23
2.41
2.60
2.78
2.97
3.15
3.34
3.52
3.71
3.90
4.08
4.27
4.45
4.64
4.82
5.01
5.19
5.38
5.57
5.75
5.94
6.12
6.31
6.49
6.68
6.86
7.05
7.23
7.42
7.61
7.79
7.98
8.16
8.35
0.23
0.45
0.68
0.91
1.14
1.36
1.59
1.82
2.05
2.27
2.50
2.73
2.96
3.18
3.41
3.64
3.87
4.09
4.32
4.55
4.78
5.00
5.23
5.46
5.69
5.91
6.14
6.37
6.60
6.82
7.05
7.28
7.51
7.73
7.96
8.19
8.42
8.64
8.87
9.10
9.33
9.55
9.78
10.01
10.23
Where v > 42 m/s,
please consult our
Applications Engineering
Department
v (m/s)
Dynamically balanced (for details see USA Standard RMA/MPTA)
86
Pulleys
Power Ratings
optibelt RED POWER II Section SPZ, 3V/9N, 3V/9J
Nominal Power Rating PN (kW) for β = 180° and Ld = 1600 mm
Statically balanced
v (m/s)
Pulleys
Table 31
nk
Datum diameter of small pulley ddk (mm)
(min-1)
63
71
80
85
90
95
100
700
950
1450
2850
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
3100
3200
3300
3400
3500
3600
3700
3800
3900
4000
4100
4200
4300
4400
4500
4600
4700
4800
4900
5000
5100
5200
5300
5400
5500
5600
5800
6000
6200
6400
6600
6800
7000
7200
7400
7600
7800
8000
8200
8400
0.60
0.77
1.08
1.80
0.11
0.21
0.30
0.38
0.45
0.53
0.60
0.67
0.74
0.80
0.87
0.93
0.99
1.05
1.11
1.17
1.23
1.28
1.34
1.39
1.44
1.49
1.54
1.59
1.64
1.69
1.74
1.78
1.83
1.87
1.91
1.95
1.99
2.03
2.07
2.11
2.15
2.18
2.22
2.25
2.29
2.32
2.35
2.38
2.41
2.44
2.47
2.49
2.52
2.54
2.57
2.59
2.61
2.63
2.65
2.67
2.70
2.73
2.75
2.77
2.78
2.79
2.80
2.80
2.79
2.78
2.77
2.75
2.72
2.69
0.80
1.03
1.47
2.50
0.15
0.27
0.38
0.49
0.60
0.70
0.80
0.89
0.99
1.08
1.17
1.25
1.34
1.43
1.51
1.59
1.67
1.75
1.83
1.90
1.98
2.05
2.13
2.20
2.27
2.34
2.40
2.47
2.54
2.60
2.66
2.73
2.79
2.85
2.90
2.96
3.02
3.07
3.13
3.18
3.23
3.28
3.33
3.37
3.42
3.46
3.51
3.55
3.59
3.63
3.67
3.70
3.74
3.77
3.80
3.83
3.89
3.94
3.99
4.02
4.06
4.08
4.10
4.11
4.11
4.11
4.10
4.09
4.06
4.03
1.02
1.32
1.89
3.28
0.18
0.34
0.48
0.62
0.76
0.89
1.02
1.14
1.26
1.38
1.50
1.61
1.73
1.84
1.95
2.06
2.16
2.27
2.37
2.47
2.57
2.67
2.77
2.87
2.96
3.05
3.14
3.23
3.32
3.41
3.49
3.58
3.66
3.74
3.82
3.89
3.97
4.04
4.12
4.19
4.26
4.32
4.39
4.45
4.51
4.58
4.63
4.69
4.75
4.80
4.85
4.90
4.95
4.99
5.03
5.08
5.15
5.22
5.28
5.33
5.38
5.41
5.43
5.45
5.45
5.45
5.43
5.41
5.37
5.32
1.14
1.48
2.13
3.70
0.20
0.38
0.54
0.69
0.85
0.99
1.14
1.28
1.41
1.55
1.68
1.81
1.94
2.07
2.19
2.31
2.44
2.55
2.67
2.79
2.90
3.01
3.12
3.23
3.34
3.44
3.55
3.65
3.75
3.85
3.94
4.04
4.13
4.22
4.31
4.40
4.49
4.57
4.65
4.73
4.81
4.89
4.96
5.03
5.10
5.17
5.24
5.30
5.36
5.42
5.48
5.53
5.59
5.64
5.69
5.73
5.82
5.89
5.96
6.01
6.05
6.09
6.11
6.12
6.12
6.11
6.08
6.05
6.00
5.94
1.26
1.64
2.36
4.12
0.22
0.41
0.59
0.77
0.93
1.10
1.26
1.41
1.57
1.72
1.86
2.01
2.15
2.29
2.43
2.57
2.70
2.84
2.97
3.10
3.22
3.35
3.47
3.59
3.71
3.83
3.95
4.06
4.17
4.28
4.39
4.50
4.60
4.70
4.80
4.90
4.99
5.09
5.18
5.27
5.35
5.44
5.52
5.60
5.68
5.75
5.83
5.90
5.96
6.03
6.09
6.15
6.21
6.26
6.31
6.36
6.45
6.53
6.60
6.65
6.69
6.72
6.74
6.74
6.73
6.71
6.67
6.62
6.55
6.47
1.38
1.80
2.60
4.53
0.24
0.45
0.65
0.84
1.02
1.20
1.38
1.55
1.72
1.88
2.05
2.21
2.36
2.52
2.67
2.82
2.97
3.12
3.26
3.41
3.55
3.68
3.82
3.95
4.09
4.22
4.34
4.47
4.59
4.71
4.83
4.95
5.06
5.17
5.28
5.39
5.49
5.60
5.70
5.79
5.89
5.98
6.07
6.15
6.24
6.32
6.40
6.47
6.54
6.61
6.68
6.74
6.80
6.86
6.91
6.97
7.06
7.14
7.20
7.25
7.29
7.31
7.32
7.31
7.29
7.25
7.19
7.12
7.03
6.92
1.50
1.96
2.83
4.94
0.26
0.49
0.70
0.91
1.11
1.30
1.50
1.68
1.87
2.05
2.23
2.40
2.57
2.74
2.91
3.08
3.24
3.40
3.56
3.71
3.87
4.02
4.16
4.31
4.45
4.60
4.73
4.87
5.01
5.14
5.27
5.39
5.52
5.64
5.75
5.87
5.98
6.09
6.20
6.30
6.41
6.50
6.60
6.69
6.78
6.87
6.95
7.03
7.11
7.18
7.25
7.31
7.38
7.43
7.49
7.54
7.63
7.71
7.77
7.82
7.84
7.86
7.85
7.83
7.78
7.72
7.64
7.54
7.42
7.28
112
125
132
140
150
160
180
200
1.78 2.08 2.25 2.43
2.33 2.74 2.95 3.20
3.38 3.96 4.28 4.63
5.90 6.90 7.43 8.01
0.31 0.36 0.38 0.41
0.58 0.67 0.72 0.78
0.83 0.97 1.04 1.13
1.08 1.26 1.36 1.47
1.32 1.54 1.66 1.80
1.55 1.82 1.96 2.12
1.78 2.08 2.25 2.43
2.00 2.35 2.53 2.74
2.22 2.61 2.81 3.05
2.44 2.86 3.09 3.35
2.66 3.12 3.36 3.64
2.87 3.36 3.63 3.93
3.07 3.61 3.89 4.21
3.28 3.85 4.15 4.49
3.48 4.08 4.40 4.77
3.68 4.31 4.65 5.04
3.87 4.54 4.90 5.31
4.06 4.77 5.14 5.57
4.25 4.99 5.38 5.82
4.44 5.21 5.62 6.08
4.62 5.42 5.85 6.32
4.80 5.63 6.07 6.57
4.98 5.84 6.29 6.80
5.15 6.04 6.51 7.03
5.32 6.24 6.72 7.26
5.49 6.43 6.93 7.48
5.66 6.62 7.13 7.70
5.82 6.81 7.33 7.91
5.98 6.99 7.52 8.11
6.13 7.17 7.71 8.31
6.28 7.34 7.89 8.50
6.43 7.51 8.07 8.69
6.58 7.67 8.24 8.87
6.72 7.83 8.41 9.05
6.85 7.99 8.57 9.21
6.99 8.14 8.73 9.38
7.12 8.28 8.88 9.53
7.24 8.42 9.02 9.68
7.37 8.56 9.16 9.82
7.49 8.68 9.29 9.95
7.60 8.81 9.42 10.08
7.71 8.93 9.54 10.20
7.82 9.04 9.65 10.31
7.92 9.15 9.76 10.41
8.02 9.25 9.86 10.51
8.11 9.34 9.95 10.59
8.20 9.43 10.04 10.67
8.29 9.52 10.12 10.74
8.37 9.59 10.19 10.81
8.45 9.67 10.25 10.86
8.52 9.73 10.31 10.91
8.58 9.79 10.36 10.94
8.64 9.84 10.40 10.97
8.70 9.89 10.44 10.99
8.75 9.93 10.47 11.00
8.80 9.96 10.48 11.00
8.88 10.00 10.50 10.97
8.94 10.01 10.48 10.90
8.97 10.00 10.42 10.79
8.99 9.95 10.33 10.63
8.98 9.88
8.95 9.77
8.89 9.62
8.81 9.45
8.70
8.57
8.41
8.22
2.66
3.50
5.07
8.72
0.45
0.85
1.24
1.61
1.97
2.32
2.66
3.00
3.34
3.66
3.99
4.30
4.61
4.92
5.22
5.52
5.81
6.09
6.37
6.64
6.91
7.17
7.43
7.68
7.92
8.16
8.39
8.61
8.83
9.04
9.24
9.44
9.63
9.81
9.98
10.15
10.30
10.45
10.59
10.72
10.84
10.96
11.06
11.16
11.24
11.32
11.38
11.44
11.49
11.52
11.54
11.56
11.56
11.55
11.53
11.50
11.40
2.89
3.80
5.50
9.41
0.49
0.92
1.34
1.74
2.13
2.52
2.89
3.26
3.62
3.98
4.33
4.67
5.01
5.34
5.67
5.99
6.30
6.61
6.91
7.20
7.49
7.77
8.04
8.31
8.56
8.82
9.06
9.29
9.52
9.74
9.95
10.15
10.35
10.53
10.70
10.87
11.02
11.17
11.31
11.43
11.54
11.65
11.74
11.82
11.89
11.95
12.00
12.03
12.05
12.06
12.06
12.04
12.01
11.97
3.35
4.40
6.36
10.70
0.56
1.07
1.55
2.02
2.47
2.91
3.35
3.77
4.19
4.60
5.01
5.40
5.79
6.17
6.54
6.91
7.26
7.61
7.95
8.28
8.60
8.91
9.22
9.51
9.79
10.07
10.33
10.58
10.82
11.05
11.27
11.47
11.67
11.85
12.01
12.17
12.31
12.43
12.55
12.65
12.73
12.80
12.85
12.89
12.91
12.91
12.90
12.87
12.82
12.76
3.80
4.99
7.19
11.88
0.64
1.21
1.76
2.29
2.80
3.30
3.80
4.28
4.75
5.22
5.67
6.12
6.55
6.98
7.40
7.80
8.20
8.58
8.96
9.32
9.67
10.01
10.33
10.64
10.94
11.23
11.50
11.76
12.00
12.23
12.44
12.64
12.81
12.98
13.12
13.25
13.36
13.45
13.52
13.57
13.60
13.61
13.60
13.57
13.51
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
0.01
0.01
0.02
0.04
0.00
0.00
0.00
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.04
0.04
0.04
0.04
0.04
0.04
0.04
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.06
0.06
0.06
0.06
0.06
0.06
0.06
0.07
0.07
0.07
0.07
0.07
0.07
0.07
0.08
0.08
0.08
0.08
0.08
0.09
0.09
0.09
0.09
0.10
0.10
0.10
0.11
0.11
0.11
0.11
0.12
0.12
0.06
0.09
0.13
0.26
0.01
0.02
0.03
0.04
0.05
0.06
0.06
0.07
0.08
0.09
0.10
0.11
0.12
0.13
0.14
0.15
0.16
0.17
0.18
0.19
0.19
0.20
0.21
0.22
0.23
0.24
0.25
0.26
0.27
0.28
0.29
0.30
0.31
0.31
0.32
0.33
0.34
0.35
0.36
0.37
0.38
0.39
0.40
0.41
0.42
0.43
0.44
0.44
0.45
0.46
0.47
0.48
0.49
0.50
0.51
0.52
0.54
0.56
0.57
0.59
0.61
0.63
0.65
0.67
0.69
0.70
0.72
0.74
0.76
0.78
RED POWER II
Where v > 42 m/s,
please consult our
Applications Engineering
Department
power (kW)
speed ratio i
1,27 >1,57
to
1,57
0.09
0.12
0.19
0.37
0.01
0.03
0.04
0.05
0.07
0.08
0.09
0.11
0.12
0.13
0.14
0.16
0.17
0.18
0.20
0.21
0.22
0.24
0.25
0.26
0.28
0.29
0.30
0.32
0.33
0.34
0.35
0.37
0.38
0.39
0.41
0.42
0.43
0.45
0.46
0.47
0.49
0.50
0.51
0.53
0.54
0.55
0.57
0.58
0.59
0.60
0.62
0.63
0.64
0.66
0.67
0.68
0.70
0.71
0.72
0.74
0.76
0.79
0.81
0.84
0.87
0.89
0.92
0.95
0.97
1.00
1.03
1.05
1.08
1.10
0.11
0.15
0.23
0.46
0.02
0.03
0.05
0.06
0.08
0.10
0.11
0.13
0.15
0.16
0.18
0.19
0.21
0.23
0.24
0.26
0.27
0.29
0.31
0.32
0.34
0.35
0.37
0.39
0.40
0.42
0.44
0.45
0.47
0.48
0.50
0.52
0.53
0.55
0.56
0.58
0.60
0.61
0.63
0.64
0.66
0.68
0.69
0.71
0.73
0.74
0.76
0.77
0.79
0.81
0.82
0.84
0.85
0.87
0.89
0.90
0.93
0.97
1.00
1.03
1.06
1.10
1.13
1.16
1.19
1.22
1.26
1.29
1.32
1.35
v (m/s)
Dynamically balanced (for details see DIN 2211)
Note: Pulley diameters shown are outside diameters for sections 3V/9N, 3V/9J.
Pulleys
87
Power Ratings
optibelt RED POWER II Section SPA
Nominal Power Rating PN (kW) for β = 180° and Ld = 2500 mm
Statically balanced
v (m/s)
Pulleys
Table 32
nk
Datum diameter of small pulley ddk (mm)
(min-1)
90
100
112
118
125
132
140
150
160
180
200
224
250
280
315
700
950
1450
2850
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
3100
3200
3300
3400
3500
3600
3700
3800
3900
4000
4100
4200
4300
4400
4500
4600
4700
4800
4900
5000
5100
5200
5300
5400
5500
5600
5700
5800
5900
6000
6100
6200
6300
6400
6500
6600
6700
6800
6900
7000
1.34
1.72
2.40
3.91
0.26
0.47
0.66
0.84
1.02
1.18
1.34
1.50
1.64
1.79
1.93
2.07
2.20
2.33
2.46
2.59
2.71
2.83
2.94
3.06
3.17
3.27
3.38
3.48
3.58
3.68
3.77
3.87
3.96
4.04
4.13
4.21
4.29
4.37
4.44
4.51
4.58
4.65
4.71
4.77
4.83
4.88
4.94
4.99
5.03
5.07
5.12
5.15
5.19
5.22
5.25
5.27
5.29
5.31
5.33
5.34
5.35
5.35
5.36
5.36
5.35
5.34
5.33
5.31
5.30
5.27
5.25
5.22
5.18
5.14
1.73
2.24
3.16
5.29
0.32
0.59
0.84
1.08
1.30
1.52
1.73
1.94
2.14
2.34
2.53
2.71
2.90
3.07
3.25
3.42
3.59
3.76
3.92
4.08
4.23
4.38
4.53
4.68
4.82
4.96
5.09
5.23
5.36
5.48
5.61
5.73
5.84
5.96
6.07
6.17
6.27
6.37
6.47
6.56
6.65
6.74
6.82
6.89
6.97
7.04
7.11
7.17
7.23
7.28
7.33
7.38
7.42
7.46
7.49
7.52
7.54
7.56
7.58
7.59
7.60
7.60
7.60
7.59
7.58
7.56
7.54
7.51
7.48
7.44
2.20
2.86
4.07
6.91
0.40
0.74
1.05
1.36
1.65
1.93
2.20
2.47
2.73
2.98
3.23
3.48
3.72
3.96
4.19
4.41
4.64
4.86
5.07
5.28
5.49
5.69
5.89
6.09
6.28
6.46
6.65
6.83
7.00
7.17
7.34
7.50
7.66
7.81
7.96
8.10
8.24
8.38
8.51
8.63
8.76
8.87
8.98
9.09
9.19
9.29
9.38
9.46
9.54
9.62
9.69
9.75
9.81
9.86
9.91
9.95
9.98
10.01
10.04
10.05
10.06
10.06
10.06
10.05
10.04
10.01
9.98
9.95
9.90
9.85
2.43
3.16
4.52
7.71
0.44
0.81
1.16
1.49
1.82
2.13
2.43
2.73
3.02
3.31
3.59
3.86
4.13
4.39
4.65
4.91
5.16
5.40
5.64
5.88
6.11
6.34
6.56
6.78
7.00
7.21
7.41
7.61
7.81
8.00
8.19
8.37
8.54
8.72
8.88
9.04
9.20
9.35
9.50
9.64
9.77
9.90
10.03
10.15
10.26
10.36
10.46
10.56
10.65
10.73
10.81
10.87
10.94
10.99
11.04
11.09
11.12
11.15
11.17
11.19
11.19
11.19
11.19
11.17
11.15
11.12
11.08
11.03
10.98
10.91
2.70
3.52
5.04
8.63
0.48
0.89
1.28
1.65
2.01
2.36
2.70
3.04
3.36
3.68
3.99
4.30
4.60
4.90
5.19
5.48
5.76
6.03
6.30
6.57
6.83
7.09
7.34
7.58
7.82
8.06
8.29
8.52
8.74
8.95
9.16
9.36
9.56
9.75
9.94
10.12
10.29
10.46
10.62
10.78
10.93
11.07
11.21
11.34
11.46
11.58
11.69
11.79
11.89
11.97
12.05
12.13
12.19
12.25
12.30
12.34
12.37
12.40
12.42
12.42
12.42
12.41
12.40
12.37
12.33
12.29
12.24
12.17
12.10
12.02
2.97
3.88
5.56
9.53
0.52
0.98
1.40
1.81
2.21
2.60
2.97
3.34
3.70
4.05
4.40
4.74
5.07
5.40
5.72
6.04
6.35
6.66
6.96
7.25
7.54
7.83
8.10
8.38
8.64
8.90
9.16
9.41
9.65
9.89
10.12
10.34
10.56
10.77
10.97
11.17
11.36
11.55
11.72
11.89
12.05
12.21
12.35
12.49
12.63
12.75
12.86
12.97
13.07
13.16
13.24
13.31
13.38
13.43
13.48
13.51
13.54
13.56
13.57
13.56
13.55
13.53
13.50
13.46
13.40
3.28
4.28
6.15
10.54
0.57
1.07
1.54
2.00
2.43
2.86
3.28
3.68
4.08
4.48
4.86
5.24
5.61
5.97
6.33
6.68
7.03
7.37
7.70
8.03
8.35
8.66
8.97
9.27
9.57
9.85
10.14
10.41
10.68
10.94
11.19
11.44
11.67
11.90
12.13
12.34
12.55
12.75
12.94
13.12
13.29
13.46
13.61
13.76
13.90
14.03
14.14
14.25
14.35
14.44
14.52
14.59
14.65
14.69
14.73
14.76
14.77
14.77
14.76
14.75
14.71
14.67
14.61
14.55
14.47
3.66
4.78
6.88
11.79
0.64
1.19
1.72
2.22
2.71
3.19
3.66
4.11
4.56
5.00
5.43
5.86
6.27
6.68
7.08
7.48
7.86
8.25
8.62
8.98
9.34
9.69
10.04
10.37
10.70
11.02
11.33
11.64
11.93
12.22
12.50
12.77
13.03
13.28
13.52
13.76
13.98
14.19
14.40
14.59
14.77
14.95
15.11
15.26
15.40
15.53
15.65
15.75
15.84
15.92
15.99
16.05
16.09
16.12
16.14
16.15
16.14
16.11
16.08
16.02
4.03
5.28
7.61
13.00
0.70
1.31
1.89
2.45
2.99
3.52
4.03
4.54
5.04
5.52
6.00
6.47
6.93
7.38
7.83
8.26
8.69
9.11
9.52
9.93
10.32
10.71
11.09
11.45
11.81
12.16
12.50
12.84
13.16
13.47
13.77
14.06
14.34
14.61
14.87
15.12
15.35
15.58
15.79
15.99
16.18
16.35
16.52
16.66
16.80
16.92
17.03
17.13
17.21
17.27
17.32
17.36
17.38
17.38
17.37
4.78
6.27
9.03
15.33
0.82
1.54
2.23
2.90
3.54
4.17
4.78
5.39
5.98
6.56
7.12
7.68
8.23
8.77
9.30
9.81
10.32
10.81
11.30
11.77
12.24
12.69
13.13
13.55
13.97
14.37
14.76
15.14
15.51
15.86
16.20
16.52
16.83
17.12
17.40
17.66
17.91
18.14
18.35
18.55
18.73
18.89
19.04
19.17
19.27
19.36
19.43
19.48
19.52
19.53
5.53
7.24
10.43
17.52
0.94
1.78
2.57
3.34
4.09
4.81
5.53
6.22
6.91
7.58
8.23
8.88
9.51
10.13
10.73
11.33
11.91
12.47
13.03
13.56
14.09
14.60
15.09
15.57
16.03
16.48
16.91
17.32
17.72
18.09
18.45
18.79
19.11
19.41
19.69
19.95
20.19
20.41
20.60
20.77
20.92
21.05
21.15
21.22
21.28
6.41
8.40
12.08
19.96
1.09
2.06
2.98
3.87
4.73
5.58
6.41
7.22
8.01
8.78
9.54
10.29
11.02
11.73
12.42
13.10
13.76
14.41
15.03
15.64
16.22
16.79
17.34
17.87
18.37
18.85
19.31
19.75
20.17
20.55
20.92
21.26
21.57
21.85
22.11
22.34
22.53
22.70
22.84
22.95
7.35
9.63
13.81
22.35
1.24
2.35
3.41
4.44
5.43
6.40
7.35
8.28
9.18
10.07
10.94
11.78
12.61
13.42
14.20
14.96
15.70
16.42
17.11
17.78
18.43
19.04
19.63
20.19
20.73
21.23
21.70
22.14
22.55
22.93
23.27
23.57
23.84
24.08
24.27
8.42
11.03
15.75
24.75
1.42
2.70
3.91
5.08
6.23
7.34
8.42
9.48
10.52
11.53
12.51
13.47
14.41
15.31
16.19
17.04
17.86
18.64
19.40
20.12
20.81
21.46
22.08
22.65
23.19
23.69
24.15
24.56
24.93
25.25
9.66
12.62
17.93
27.01
1.63
3.09
4.49
5.83
7.14
8.42
9.66
10.87
12.05
13.19
14.31
15.39
16.43
17.44
18.41
19.34
20.24
21.08
21.89
22.65
23.36
24.02
24.64
25.20
25.70
26.15
26.54
26.87
27.13
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
0.02
0.03
0.05
0.09
0.00
0.01
0.01
0.01
0.02
0.02
0.02
0.03
0.03
0.03
0.04
0.04
0.04
0.05
0.05
0.05
0.06
0.06
0.06
0.07
0.07
0.07
0.08
0.08
0.08
0.09
0.09
0.09
0.10
0.10
0.10
0.11
0.11
0.11
0.12
0.12
0.12
0.13
0.13
0.13
0.14
0.14
0.14
0.15
0.15
0.15
0.16
0.16
0.16
0.17
0.17
0.17
0.18
0.18
0.18
0.19
0.19
0.19
0.20
0.20
0.20
0.21
0.21
0.21
0.22
0.22
0.22
0.23
0.23
0.23
0.15
0.20
0.31
0.61
0.02
0.04
0.06
0.09
0.11
0.13
0.15
0.17
0.19
0.22
0.24
0.26
0.28
0.30
0.32
0.34
0.37
0.39
0.41
0.43
0.45
0.47
0.50
0.52
0.54
0.56
0.58
0.60
0.62
0.65
0.67
0.69
0.71
0.73
0.75
0.77
0.80
0.82
0.84
0.86
0.88
0.90
0.93
0.95
0.97
0.99
1.01
1.03
1.05
1.08
1.10
1.12
1.14
1.16
1.18
1.21
1.23
1.25
1.27
1.29
1.31
1.33
1.36
1.38
1.40
1.42
1.44
1.46
1.49
1.51
RED POWER II
Where v > 42 m/s,
please consult our
Applications Engineering
Department
power (kW)
speed ratio i
1,27 >1,57
to
1,57
0.21
0.29
0.44
0.87
0.03
0.06
0.09
0.12
0.15
0.18
0.21
0.24
0.27
0.31
0.34
0.37
0.40
0.43
0.46
0.49
0.52
0.55
0.58
0.61
0.64
0.67
0.70
0.73
0.76
0.79
0.82
0.86
0.89
0.92
0.95
0.98
1.01
1.04
1.07
1.10
1.13
1.16
1.19
1.22
1.25
1.28
1.31
1.34
1.37
1.41
1.44
1.47
1.50
1.53
1.56
1.59
1.62
1.65
1.68
1.71
1.74
1.77
1.80
1.83
1.86
1.89
1.92
1.96
1.99
2.02
2.05
2.08
2.11
2.14
v (m/s)
Dynamically balanced (for details see DIN 2211)
88
Pulleys
0.26
0.36
0.54
1.07
0.04
0.07
0.11
0.15
0.19
0.22
0.26
0.30
0.34
0.37
0.41
0.45
0.49
0.52
0.56
0.60
0.64
0.67
0.71
0.75
0.79
0.82
0.86
0.90
0.94
0.97
1.01
1.05
1.09
1.12
1.16
1.20
1.24
1.27
1.31
1.35
1.39
1.42
1.46
1.50
1.54
1.57
1.61
1.65
1.69
1.72
1.76
1.80
1.84
1.87
1.91
1.95
1.99
2.02
2.06
2.10
2.13
2.17
2.21
2.25
2.28
2.32
2.36
2.40
2.43
2.47
2.51
2.55
2.58
2.62
Power Ratings
optibelt RED POWER II Section SPB, 5V/15N, 5V/15J
Nominal Power Rating PN (kW) for β = 180° and Ld = 3550 mm
Statically balanced
v (m/s)
Pulleys
Table 33
nk
Datum diameter of small pulley ddk (mm)
(min-1)
140
150
160
180
190
200
212
224
236
250
280
315
700
950
1450
2850
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
3100
3200
3300
3400
3500
3600
3700
3800
3900
4000
4100
4200
4300
4400
4500
4600
4700
4800
4900
5000
5100
5200
5300
5400
5500
4.02
5.19
7.33
12.11
0.74
1.36
1.94
2.49
3.02
3.52
4.02
4.50
4.96
5.42
5.86
6.29
6.72
7.13
7.54
7.93
8.32
8.69
9.06
9.42
9.77
10.11
10.44
10.77
11.08
11.39
11.68
11.97
12.24
12.51
12.76
13.01
13.24
13.47
13.68
13.89
14.08
14.26
14.43
14.59
14.74
14.87
15.00
15.11
15.20
15.29
15.36
15.42
15.47
15.50
15.52
15.53
15.52
15.50
15.46
4.64
6.02
8.55
14.21
0.84
1.56
2.23
2.86
3.47
4.07
4.64
5.20
5.75
6.28
6.81
7.32
7.82
8.31
8.78
9.25
9.71
10.16
10.59
11.02
11.44
11.84
12.24
12.62
12.99
13.36
13.71
14.05
14.38
14.69
15.00
15.29
15.57
15.84
16.10
16.34
16.57
16.79
16.99
17.18
17.35
17.52
17.66
17.79
17.91
18.01
18.10
18.17
18.22
18.26
18.28
18.29
18.28
18.25
18.20
5.27
6.84
9.75
16.28
0.94
1.75
2.51
3.23
3.93
4.61
5.27
5.91
6.53
7.15
7.75
8.33
8.91
9.47
10.02
10.56
11.09
11.60
12.11
12.60
13.08
13.55
14.00
14.45
14.88
15.29
15.70
16.09
16.47
16.83
17.18
17.52
17.84
18.15
18.44
18.72
18.98
19.23
19.46
19.67
19.87
20.05
20.21
20.35
20.48
20.59
20.68
20.75
20.80
20.84
20.85
20.84
20.82
20.77
20.70
6.50
8.48
12.12
20.29
1.14
2.14
3.07
3.97
4.84
5.68
6.50
7.30
8.09
8.86
9.61
10.35
11.07
11.78
12.47
13.14
13.81
14.45
15.09
15.70
16.30
16.89
17.46
18.01
18.55
19.07
19.57
20.05
20.52
20.96
21.39
21.80
22.19
22.56
22.91
23.24
23.54
23.83
24.09
24.33
24.55
24.74
24.91
25.06
25.18
25.28
25.35
25.39
25.41
25.40
7.12
9.29
13.30
22.22
1.24
2.33
3.35
4.34
5.29
6.21
7.12
8.00
8.86
9.71
10.53
11.34
12.14
12.91
13.68
14.42
15.15
15.86
16.55
17.23
17.88
18.52
19.15
19.75
20.33
20.90
21.44
21.97
22.47
22.95
23.41
23.85
24.27
24.66
25.03
25.37
25.69
25.99
26.25
26.50
26.71
26.90
27.06
27.19
27.30
7.73
10.09
14.46
24.11
1.34
2.52
3.63
4.70
5.74
6.74
7.73
8.69
9.63
10.55
11.45
12.33
13.20
14.04
14.87
15.68
16.47
17.24
18.00
18.73
19.44
20.13
20.81
21.46
22.09
22.69
23.28
23.84
24.37
24.88
25.37
25.83
26.27
26.68
27.06
27.42
27.74
28.04
28.30
28.54
28.75
28.92
29.06
29.17
29.25
8.46
11.05
15.84
26.31
1.46
2.75
3.97
5.14
6.27
7.38
8.46
9.51
10.54
11.55
12.54
13.51
14.46
15.39
16.29
17.18
18.04
18.89
19.71
20.51
21.28
22.03
22.76
23.46
24.14
24.79
25.42
26.02
26.59
27.13
27.64
28.13
28.58
29.00
29.39
29.75
30.07
30.36
30.61
30.83
9.18
12.01
17.21
28.43
1.58
2.98
4.30
5.57
6.81
8.01
9.18
10.33
11.45
12.55
13.63
14.68
15.71
16.72
17.70
18.66
19.60
20.51
21.39
22.25
23.09
23.90
24.67
25.43
26.15
26.84
27.50
28.13
28.73
29.29
29.82
30.32
30.78
31.20
31.59
31.94
32.25
32.52
32.75
32.94
9.91
12.96
18.57
30.48
1.70
3.20
4.63
6.00
7.34
8.64
9.91
11.15
12.36
13.55
14.71
15.84
16.95
18.04
19.09
20.13
21.13
22.11
23.05
23.97
24.86
25.72
26.54
27.34
28.10
28.82
29.52
30.17
30.79
31.37
31.91
32.41
32.87
33.28
33.66
10.74
14.05
20.13
32.78
1.84
3.47
5.02
6.51
7.96
9.37
10.74
12.09
13.41
14.69
15.95
17.18
18.38
19.56
20.70
21.81
22.89
23.94
24.96
25.94
26.88
27.80
28.67
29.51
30.31
31.06
31.78
32.45
33.09
33.67
34.21
34.71
35.15
35.55
35.89
12.52
16.38
23.41
37.30
2.13
4.03
5.84
7.58
9.27
10.92
12.52
14.09
15.63
17.13
18.59
20.01
21.40
22.75
24.06
25.34
26.57
27.76
28.90
30.00
31.05
32.06
33.01
33.92
34.77
35.56
36.30
36.98
37.61
38.17
14.57
19.05
27.12
41.87
2.47
4.68
6.78
8.81
10.78
12.70
14.57
16.40
18.18
19.91
21.60
23.24
24.83
26.37
27.86
29.30
30.68
32.00
33.26
34.47
35.60
36.68
37.68
38.61
39.47
40.26
40.96
41.59
42.13
355
375
400
16.88 18.02 19.44
22.04 23.51 25.32
31.19 33.16 35.54
2.86
5.42
7.86
10.21
12.50
14.72
16.88
18.99
21.04
23.02
24.95
26.82
28.62
30.35
32.02
33.61
35.12
36.56
37.91
39.18
40.37
41.45
42.45
43.34
44.14
3.05
5.79
8.39
10.91
13.35
15.72
18.02
20.27
22.44
24.55
26.59
28.56
30.46
32.28
34.02
35.67
37.24
38.71
40.10
41.38
42.55
43.63
44.59
45.43
3.29
6.24
9.06
11.77
14.40
16.96
19.44
21.85
24.18
26.43
28.61
30.70
32.71
34.62
36.44
38.16
39.78
41.28
42.68
43.95
45.10
46.13
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
0.05
0.07
0.11
0.21
0.01
0.01
0.02
0.03
0.04
0.04
0.05
0.06
0.07
0.07
0.08
0.09
0.10
0.10
0.11
0.12
0.12
0.13
0.14
0.15
0.15
0.16
0.17
0.18
0.18
0.19
0.20
0.21
0.21
0.22
0.23
0.23
0.24
0.25
0.26
0.26
0.27
0.28
0.29
0.29
0.30
0.31
0.32
0.32
0.33
0.34
0.34
0.35
0.36
0.37
0.37
0.38
0.39
0.40
0.40
0.33
0.45
0.69
1.35
0.05
0.09
0.14
0.19
0.24
0.28
0.33
0.38
0.43
0.47
0.52
0.57
0.62
0.66
0.71
0.76
0.81
0.85
0.90
0.95
0.99
1.04
1.09
1.14
1.18
1.23
1.28
1.33
1.37
1.42
1.47
1.52
1.56
1.61
1.66
1.71
1.75
1.80
1.85
1.89
1.94
1.99
2.04
2.08
2.13
2.18
2.23
2.27
2.32
2.37
2.42
2.46
2.51
2.56
2.61
RED POWER II
power (kW)
speed ratio i
1,27 >1,57
to
1,57
0.47
0.64
0.97
1.92
0.07
0.13
0.20
0.27
0.34
0.40
0.47
0.54
0.61
0.67
0.74
0.81
0.87
0.94
1.01
1.08
1.14
1.21
1.28
1.34
1.41
1.48
1.55
1.61
1.68
1.75
1.82
1.88
1.95
2.02
2.08
2.15
2.22
2.29
2.35
2.42
2.49
2.55
2.62
2.69
2.76
2.82
2.89
2.96
3.03
3.09
3.16
3.23
3.29
3.36
3.43
3.50
3.56
3.63
3.70
0.58
0.78
1.20
2.35
0.08
0.16
0.25
0.33
0.41
0.49
0.58
0.66
0.74
0.82
0.91
0.99
1.07
1.15
1.24
1.32
1.40
1.48
1.57
1.65
1.73
1.81
1.90
1.98
2.06
2.14
2.23
2.31
2.39
2.47
2.56
2.64
2.72
2.80
2.89
2.97
3.05
3.13
3.21
3.30
3.38
3.46
3.54
3.63
3.71
3.79
3.87
3.96
4.04
4.12
4.20
4.29
4.37
4.45
4.53
Where v > 42 m/s,
please consult our
Applications Engineering
Department
v (m/s)
Dynamically balanced (for details see DIN 2211)
Note: Pulley diameters shown are outside diameters for sections 5V/15N, 5V/15J .
Pulleys
89
Power Ratings
optibelt RED POWER II Section SPC
Nominal Power Rating PN (kW) for β = 180° and Ld = 5600 mm
Statically balanced
v (m/s)
Pulleys
Table 34
nk
Datum diameter of small pulley ddk (mm)
(min-1)
224
250
280
300
315
335
355
375
400
450
500
560
630
710
700
950
1450
2850
50
100
200
300
350
400
450
500
550
600
650
700
750
800
850
900
950
1000
1050
1100
1150
1200
1250
1300
1350
1400
1450
1500
1550
1600
1650
1700
1750
1800
1850
1900
1950
2000
2050
2100
2150
2200
2250
2300
2350
2400
2450
2500
2550
2600
2650
2700
2750
2800
2850
2900
2950
3000
3050
3100
3150
3200
3250
3300
3350
3400
3450
3500
11.09
14.23
19.73
29.03
1.12
2.07
3.80
5.40
6.17
6.92
7.65
8.36
9.06
9.75
10.43
11.09
11.74
12.38
13.01
13.63
14.23
14.83
15.41
15.99
16.56
17.11
17.65
18.19
18.71
19.22
19.73
20.22
20.70
21.17
21.63
22.08
22.51
22.94
23.35
23.76
24.15
24.53
24.90
25.25
25.60
25.93
26.25
26.55
26.84
27.12
27.39
27.64
27.88
28.11
28.32
28.52
28.70
28.87
29.03
29.17
29.29
29.40
29.50
29.58
29.64
29.69
29.72
29.73
29.73
29.71
29.68
29.63
13.84
17.84
24.86
36.59
1.35
2.52
4.67
6.67
7.63
8.57
9.49
10.39
11.28
12.15
13.00
13.84
14.67
15.48
16.28
17.07
17.84
18.60
19.35
20.08
20.81
21.51
22.21
22.89
23.56
24.22
24.86
25.49
26.10
26.71
27.29
27.86
28.42
28.97
29.50
30.01
30.51
30.99
31.46
31.91
32.34
32.76
33.16
33.55
33.92
34.27
34.60
34.91
35.21
35.49
35.75
35.99
36.21
36.41
36.59
36.75
36.90
37.02
37.12
37.20
37.25
37.29
37.31
37.30
37.27
37.21
37.14
37.04
16.98
21.94
30.63
44.44
1.63
3.04
5.66
8.11
9.30
10.45
11.59
12.71
13.80
14.88
15.94
16.98
18.00
19.01
20.01
20.98
21.94
22.88
23.81
24.72
25.62
26.49
27.36
28.20
29.03
29.84
30.63
31.40
32.16
32.90
33.62
34.32
35.00
35.66
36.30
36.92
37.52
38.11
38.66
39.20
39.72
40.21
40.68
41.13
41.56
41.96
42.33
42.69
43.01
43.32
43.59
43.85
44.07
44.27
44.44
44.59
44.70
44.79
44.85
44.88
44.88
44.85
44.79
19.05
24.64
34.38
49.11
1.80
3.39
6.32
9.07
10.40
11.70
12.98
14.24
15.47
16.68
17.88
19.05
20.21
21.34
22.46
23.56
24.64
25.70
26.74
27.76
28.77
29.75
30.72
31.66
32.59
33.50
34.38
35.24
36.09
36.91
37.70
38.48
39.23
39.96
40.67
41.35
42.00
42.63
43.24
43.82
44.37
44.90
45.40
45.87
46.32
46.73
47.12
47.48
47.80
48.10
48.37
48.60
48.80
20.59
26.64
37.14
52.30
1.94
3.64
6.81
9.79
11.23
12.64
14.02
15.38
16.72
18.03
19.32
20.59
21.84
23.07
24.28
25.47
26.64
27.79
28.91
30.02
31.10
32.17
33.21
34.22
35.22
36.19
37.14
38.07
38.97
39.84
40.70
41.52
42.32
43.09
43.84
44.56
45.25
45.91
46.55
47.15
47.72
48.27
48.78
49.26
49.71
50.12
50.51
50.85
51.17
51.45
51.69
51.90
52.07
22.64
29.28
40.75
24.66
31.90
44.28
26.67
34.48
47.72
29.16
37.66
51.90
34.06
43.88
59.81
38.86
49.88
67.09
44.48
56.80
74.92
50.84
64.44
82.69
57.82
72.55
2.12
3.98
7.46
10.74
12.32
13.87
15.40
16.89
18.37
19.81
21.24
22.64
24.01
25.36
26.69
28.00
29.28
30.54
31.78
32.99
34.17
35.34
36.47
37.58
38.67
39.72
40.75
41.75
42.73
43.67
44.59
45.47
46.33
47.15
47.94
48.70
49.43
50.12
50.78
51.40
51.99
52.54
53.05
53.53
53.97
54.37
54.73
55.05
2.30
4.32
8.11
11.68
13.41
15.10
16.77
18.40
20.01
21.58
23.14
24.66
26.16
27.63
29.08
30.50
31.90
33.26
34.60
35.92
37.20
38.45
39.68
40.88
42.04
43.18
44.28
45.35
46.39
47.39
48.36
49.30
50.20
51.06
51.89
52.67
53.42
54.13
54.80
55.43
56.01
56.56
57.06
57.52
57.93
58.29
58.61
58.88
2.47
4.66
8.76
12.63
14.50
16.33
18.13
19.90
21.64
23.34
25.02
26.67
28.29
29.88
31.44
32.98
34.48
35.95
37.39
38.80
40.18
41.52
42.83
44.11
45.35
46.55
47.72
48.85
49.95
51.00
52.02
52.99
53.93
54.82
55.66
56.47
57.23
57.94
58.60
59.22
59.79
60.31
60.78
2.69
5.09
9.56
13.80
15.84
17.85
19.82
21.76
23.66
25.53
27.36
29.16
30.93
32.66
34.36
36.03
37.66
39.26
40.82
42.34
43.83
45.27
46.68
48.05
49.37
50.66
51.90
53.09
54.25
55.35
56.41
57.42
58.38
59.29
60.14
60.95
61.70
62.40
63.04
63.62
64.14
64.61
65.01
3.13
5.93
11.16
16.12
18.52
20.87
23.17
25.44
27.66
29.83
31.97
34.06
36.11
38.12
40.09
42.00
43.88
45.70
47.48
49.21
50.89
52.51
54.08
55.60
57.06
58.47
59.81
61.09
62.31
63.47
64.56
65.59
66.54
67.43
68.25
68.99
69.65
70.24
3.57
6.76
12.75
18.42
21.16
23.85
26.48
29.06
31.59
34.07
36.49
38.86
41.18
43.44
45.65
47.80
49.88
51.91
53.88
55.77
57.61
59.37
61.06
62.69
64.23
65.70
67.09
68.40
69.62
70.77
71.82
72.78
73.65
4.09
7.75
14.64
21.15
24.30
27.38
30.40
33.34
36.23
39.05
41.80
44.48
47.09
49.63
52.10
54.49
56.80
59.03
61.17
63.22
65.19
67.06
68.84
70.52
72.09
73.56
74.92
76.17
4.69
8.90
16.82
24.31
27.92
31.44
34.89
38.25
41.53
44.72
47.82
50.84
53.76
56.58
59.30
61.92
64.44
66.83
69.12
71.28
73.32
75.23
77.01
78.64
80.14
81.49
82.69
5.37
10.20
19.29
27.86
31.98
36.00
39.92
43.72
47.42
51.01
54.48
57.82
61.04
64.13
67.08
69.89
72.55
75.05
77.40
79.57
81.57
83.40
85.03
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
0.14
0.19
0.29
0.57
0.01
0.02
0.04
0.06
0.07
0.08
0.09
0.10
0.11
0.12
0.13
0.14
0.15
0.16
0.17
0.18
0.19
0.20
0.21
0.22
0.23
0.24
0.25
0.26
0.27
0.28
0.29
0.30
0.31
0.32
0.33
0.34
0.35
0.36
0.37
0.38
0.39
0.40
0.41
0.42
0.43
0.44
0.45
0.46
0.47
0.48
0.49
0.50
0.51
0.52
0.53
0.54
0.55
0.56
0.57
0.58
0.59
0.60
0.61
0.62
0.63
0.64
0.65
0.66
0.67
0.68
0.69
0.70
0.90
1.22
1.86
3.67
0.06
0.13
0.26
0.39
0.45
0.51
0.58
0.64
0.71
0.77
0.84
0.90
0.96
1.03
1.09
1.16
1.22
1.29
1.35
1.41
1.48
1.54
1.61
1.67
1.74
1.80
1.86
1.93
1.99
2.06
2.12
2.19
2.25
2.31
2.38
2.44
2.51
2.57
2.64
2.70
2.77
2.83
2.89
2.96
3.02
3.09
3.15
3.22
3.28
3.34
3.41
3.47
3.54
3.60
3.67
3.73
3.79
3.86
3.92
3.99
4.05
4.12
4.18
4.24
4.31
4.37
4.44
4.50
RED POWER II
Where v > 42 m/s,
please consult our
Applications Engineering
Department
power (kW)
speed ratio i
1,27 >1,57
to
1,57
1.28
1.73
2.65
5.20
0.09
0.18
0.37
0.55
0.64
0.73
0.82
0.91
1.00
1.10
1.19
1.28
1.37
1.46
1.55
1.64
1.73
1.83
1.92
2.01
2.10
2.19
2.28
2.37
2.46
2.56
2.65
2.74
2.83
2.92
3.01
3.10
3.19
3.29
3.38
3.47
3.56
3.65
3.74
3.83
3.92
4.02
4.11
4.20
4.29
4.38
4.47
4.56
4.66
4.75
4.84
4.93
5.02
5.11
5.20
5.29
5.39
5.48
5.57
5.66
5.75
5.84
5.93
6.02
6.12
6.21
6.30
6.39
v (m/s)
Dynamically balanced (for details see DIN 2211)
90
Pulleys
1.57
2.13
3.25
6.38
0.11
0.22
0.45
0.67
0.78
0.90
1.01
1.12
1.23
1.34
1.45
1.57
1.68
1.79
1.90
2.01
2.13
2.24
2.35
2.46
2.57
2.69
2.80
2.91
3.02
3.13
3.25
3.36
3.47
3.58
3.69
3.80
3.92
4.03
4.14
4.25
4.36
4.48
4.59
4.70
4.81
4.92
5.04
5.15
5.26
5.37
5.48
5.60
5.71
5.82
5.93
6.04
6.16
6.27
6.38
6.49
6.60
6.71
6.83
6.94
7.05
7.16
7.27
7.39
7.50
7.61
7.72
7.83
Power Ratings
optibelt RED POWER II Section 8V/25N, 8V/25J
Nominal Power Rating PN (kW) for β = 180° and 8V 2500/6350 mm La
Statically balanced
v (m/s)
Pulleys
Table 35
nk
Datum diameter of small pulley ddk (mm)
(min-1)
335
355
375
425
450
475
500
530
560
600
630
700
950
1450
50
100
150
200
250
300
350
400
450
500
550
600
650
700
750
800
850
900
950
1000
1050
1100
1150
1200
1250
1300
1350
1400
1450
1500
1550
1600
1650
1700
1750
1800
1850
1900
1950
2000
2050
2100
2150
2200
2250
28.21
35.60
46.12
2.80
5.23
7.50
9.68
11.78
13.81
15.79
17.71
19.58
21.40
23.18
24.90
26.58
28.21
29.79
31.32
32.80
34.23
35.60
36.92
38.19
39.40
40.55
41.64
42.66
43.63
44.53
45.36
46.12
46.82
47.44
47.98
48.46
48.85
49.16
49.40
49.54
49.61
49.59
49.47
49.27
48.98
48.59
48.10
47.51
31.31
39.51
50.96
3.08
5.76
8.28
10.69
13.03
15.29
17.49
19.63
21.71
23.74
25.71
27.63
29.50
31.31
33.07
34.77
36.41
37.99
39.51
40.97
42.36
43.69
44.95
46.14
47.25
48.30
49.26
50.15
50.96
51.68
52.32
52.88
53.34
53.72
54.00
54.18
54.27
54.25
54.13
53.91
53.58
53.14
52.59
51.93
51.15
34.38
43.34
55.57
3.36
6.29
9.05
11.70
14.27
16.76
19.17
21.53
23.82
26.05
28.23
30.34
32.39
34.38
36.30
38.16
39.96
41.69
43.34
44.93
46.44
47.87
49.23
50.50
51.69
52.80
53.82
54.74
55.57
56.31
56.95
57.48
57.91
58.24
58.46
58.56
58.55
58.42
58.18
57.81
57.31
56.69
55.93
55.04
54.02
41.89
52.60
66.08
4.04
7.60
10.98
14.22
17.35
20.40
23.36
26.24
29.04
31.77
34.42
36.99
39.48
41.89
44.21
46.45
48.59
50.64
52.60
54.46
56.21
57.85
59.39
60.81
62.12
63.30
64.36
65.29
66.08
66.74
67.26
67.64
67.87
67.95
67.86
67.62
67.22
66.65
65.90
64.98
45.56
57.04
70.75
4.39
8.26
11.93
15.46
18.88
22.20
25.43
28.57
31.62
34.59
37.47
40.26
42.96
45.56
48.06
50.47
52.77
54.96
57.04
59.01
60.85
62.57
64.16
65.62
66.94
68.12
69.15
70.03
70.75
71.32
71.72
71.95
72.00
71.88
71.57
71.07
70.38
69.49
68.40
67.10
49.17
61.36
75.01
4.73
8.91
12.88
16.70
20.40
24.00
27.49
30.88
34.18
37.38
40.48
43.48
46.38
49.17
51.85
54.41
56.85
59.17
61.36
63.41
65.32
67.10
68.72
70.18
71.49
72.63
73.60
74.39
75.01
75.43
75.66
75.70
75.53
75.15
74.56
52.72
65.54
78.82
5.07
9.56
13.83
17.94
21.92
25.78
29.53
33.18
36.72
40.14
43.46
46.67
49.76
52.72
55.56
58.26
60.83
63.26
65.54
67.66
69.62
71.42
73.04
74.49
75.75
76.82
77.70
78.36
78.82
79.07
79.09
78.87
78.43
77.74
76.80
56.90
70.37
82.80
5.47
10.34
14.96
19.42
23.73
27.91
31.97
35.91
39.73
43.43
46.99
50.43
53.74
56.90
59.91
62.77
65.47
68.01
70.37
72.55
74.54
76.33
77.93
79.31
80.47
81.41
82.12
82.58
82.80
82.76
60.98
74.99
86.09
5.88
11.11
16.09
20.89
25.53
30.02
34.39
38.62
42.71
46.66
50.48
54.14
57.64
60.98
64.16
67.15
69.96
72.58
74.99
77.19
79.18
80.93
82.45
83.72
84.74
85.50
85.98
86.18
86.09
85.70
66.28
80.81
89.34
6.42
12.14
17.59
22.83
27.91
32.82
37.58
42.19
46.64
50.92
55.04
58.97
62.73
66.28
69.64
72.78
75.69
78.37
80.81
82.99
84.91
86.55
87.90
88.95
89.70
90.12
90.20
70.14
84.91
90.88
6.82
12.91
18.71
24.29
29.68
34.90
39.96
44.84
49.54
54.06
58.39
62.52
66.44
70.14
73.61
76.83
79.79
82.49
84.91
87.04
88.86
90.36
91.53
92.36
92.83
92.93
92.64
710
800
79.91 89.95
94.65 103.34
7.88
14.95
21.67
28.13
34.37
40.39
46.19
51.77
57.12
62.23
67.07
71.65
75.93
79.91
83.57
86.89
89.86
92.45
94.65
96.43
97.79
98.70
99.14
99.10
98.55
9.07
17.22
24.96
32.40
39.56
46.44
53.04
59.35
65.35
71.02
76.34
81.28
85.83
89.95
93.62
96.83
99.53
101.71
103.34
104.39
104.83
104.64
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
0.28
0.38
0.59
0.02
0.04
0.06
0.08
0.10
0.12
0.14
0.16
0.18
0.20
0.22
0.24
0.26
0.28
0.30
0.32
0.34
0.36
0.38
0.40
0.42
0.44
0.46
0.49
0.51
0.53
0.55
0.57
0.59
0.61
0.63
0.65
0.67
0.69
0.71
0.73
0.75
0.77
0.79
0.81
0.83
0.85
0.87
0.89
0.91
1.83
2.48
3.79
0.13
0.26
0.39
0.52
0.65
0.78
0.91
1.05
1.18
1.31
1.44
1.57
1.70
1.83
1.96
2.09
2.22
2.35
2.48
2.61
2.74
2.88
3.01
3.14
3.27
3.40
3.53
3.66
3.79
3.92
4.05
4.18
4.31
4.44
4.57
4.70
4.84
4.97
5.10
5.23
5.36
5.49
5.62
5.75
5.88
RED POWER II
power (kW)
speed ratio i
1,27 >1,57
to
1,57
2.60
3.52
5.38
0.19
0.37
0.56
0.74
0.93
1.11
1.30
1.48
1.67
1.86
2.04
2.23
2.41
2.60
2.78
2.97
3.15
3.34
3.52
3.71
3.90
4.08
4.27
4.45
4.64
4.82
5.01
5.19
5.38
5.57
5.75
5.94
6.12
6.31
6.49
6.68
6.86
7.05
7.23
7.42
7.61
7.79
7.98
8.16
8.35
3.18
4.32
6.60
0.23
0.45
0.68
0.91
1.14
1.36
1.59
1.82
2.05
2.27
2.50
2.73
2.96
3.18
3.41
3.64
3.87
4.09
4.32
4.55
4.78
5.00
5.23
5.46
5.69
5.91
6.14
6.37
6.60
6.82
7.05
7.28
7.51
7.73
7.96
8.19
8.42
8.64
8.87
9.10
9.33
9.55
9.78
10.01
10.23
Where v > 42 m/s,
please consult our
Applications Engineering
Department
v (m/s)
Dynamically balanced (for details see USA Standard RMA/MPTA)
Pulleys
91
Power Ratings
optibelt SUPER TX M=S Section XPZ, 3VX
Nominal Power Rating PN (kW) for β = 180° and Ld = 1600 mm
Statically balanced
v (m/s)
Pulleys
Table 36
nk
Datum diameter of small pulley ddk (mm)
(min-1)
56
60
63
71
80
85
90
95
100
112
125
140
160
180
200
700
950
1450
2850
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
3100
3200
3300
3400
3500
3600
3700
3800
3900
4000
4100
4200
4300
4400
4500
4600
4700
4800
4900
5000
5100
5200
5300
5400
5500
5600
5800
6000
6200
6400
6600
6800
7000
7200
7400
7600
7800
8000
8200
8400
0.63
0.80
1.10
1.78
0.13
0.23
0.32
0.40
0.48
0.56
0.63
0.70
0.77
0.83
0.90
0.96
1.02
1.07
1.13
1.19
1.24
1.29
1.34
1.39
1.44
1.49
1.54
1.58
1.63
1.67
1.71
1.76
1.80
1.84
1.88
1.92
1.95
1.99
2.03
2.06
2.10
2.13
2.16
2.20
2.23
2.26
2.29
2.32
2.35
2.37
2.40
2.43
2.45
2.48
2.50
2.52
2.54
2.57
2.59
2.61
2.64
2.68
2.71
2.74
2.76
2.79
2.81
2.82
2.83
2.84
2.85
2.85
2.85
2.85
0.73
0.93
1.29
2.12
0.14
0.26
0.37
0.46
0.56
0.65
0.73
0.81
0.89
0.97
1.05
1.12
1.19
1.26
1.33
1.40
1.46
1.52
1.59
1.65
1.71
1.77
1.83
1.88
1.94
1.99
2.05
2.10
2.15
2.20
2.25
2.30
2.35
2.39
2.44
2.48
2.53
2.57
2.61
2.66
2.70
2.74
2.77
2.81
2.85
2.89
2.92
2.96
2.99
3.02
3.05
3.08
3.11
3.14
3.17
3.20
3.25
3.30
3.35
3.39
3.43
3.46
3.49
3.52
3.54
3.56
3.57
3.59
3.59
3.60
0.81
1.03
1.44
2.38
0.16
0.28
0.40
0.51
0.61
0.71
0.81
0.90
0.99
1.07
1.16
1.24
1.32
1.40
1.48
1.55
1.63
1.70
1.77
1.84
1.91
1.97
2.04
2.10
2.17
2.23
2.29
2.35
2.41
2.47
2.53
2.58
2.64
2.69
2.75
2.80
2.85
2.90
2.95
3.00
3.04
3.09
3.13
3.18
3.22
3.26
3.31
3.35
3.39
3.42
3.46
3.50
3.53
3.57
3.60
3.64
3.70
3.76
3.81
3.86
3.91
3.95
3.99
4.02
4.05
4.08
4.10
4.12
4.13
4.14
1.00
1.29
1.82
3.06
0.19
0.35
0.49
0.63
0.76
0.88
1.00
1.12
1.23
1.35
1.45
1.56
1.66
1.77
1.87
1.96
2.06
2.16
2.25
2.34
2.43
2.52
2.61
2.69
2.78
2.86
2.94
3.02
3.10
3.18
3.25
3.33
3.40
3.48
3.55
3.62
3.69
3.75
3.82
3.89
3.95
4.01
4.08
4.14
4.20
4.25
4.31
4.37
4.42
4.47
4.53
4.58
4.63
4.67
4.72
4.77
4.85
4.94
5.01
5.08
5.15
5.21
5.27
5.31
5.36
5.40
5.43
5.45
5.47
5.49
1.22
1.58
2.24
3.81
0.23
0.42
0.59
0.76
0.92
1.07
1.22
1.37
1.51
1.65
1.78
1.92
2.05
2.17
2.30
2.42
2.54
2.66
2.78
2.90
3.01
3.12
3.23
3.34
3.45
3.55
3.66
3.76
3.86
3.96
4.05
4.15
4.24
4.34
4.43
4.52
4.60
4.69
4.78
4.86
4.94
5.02
5.10
5.18
5.25
5.33
5.40
5.47
5.54
5.61
5.67
5.74
5.80
5.86
5.92
5.98
6.09
6.19
6.28
6.37
6.45
6.53
6.59
6.65
6.70
6.75
6.78
6.81
6.83
6.84
1.34
1.74
2.47
4.22
0.25
0.46
0.65
0.83
1.01
1.18
1.34
1.50
1.66
1.81
1.96
2.11
2.26
2.40
2.54
2.67
2.81
2.94
3.07
3.20
3.33
3.45
3.57
3.69
3.81
3.93
4.05
4.16
4.27
4.38
4.49
4.60
4.70
4.80
4.91
5.01
5.10
5.20
5.29
5.39
5.48
5.57
5.65
5.74
5.82
5.90
5.98
6.06
6.14
6.21
6.28
6.36
6.42
6.49
6.56
6.62
6.74
6.85
6.95
7.05
7.13
7.21
7.28
7.34
7.39
7.43
7.47
7.49
7.50
7.50
1.46
1.90
2.70
4.62
0.27
0.50
0.71
0.91
1.10
1.28
1.46
1.64
1.81
1.98
2.14
2.31
2.46
2.62
2.77
2.92
3.07
3.22
3.36
3.50
3.64
3.78
3.91
4.05
4.18
4.31
4.43
4.56
4.68
4.80
4.92
5.04
5.15
5.27
5.38
5.49
5.59
5.70
5.80
5.90
6.00
6.10
6.19
6.29
6.38
6.47
6.55
6.64
6.72
6.80
6.88
6.96
7.03
7.10
7.17
7.24
7.37
7.49
7.59
7.69
7.78
7.86
7.93
7.99
8.04
8.07
8.10
8.12
8.12
8.11
1.58
2.05
2.92
5.02
0.29
0.53
0.76
0.98
1.19
1.39
1.58
1.77
1.96
2.14
2.32
2.50
2.67
2.84
3.01
3.17
3.33
3.49
3.65
3.80
3.95
4.10
4.25
4.39
4.54
4.68
4.81
4.95
5.08
5.21
5.34
5.47
5.60
5.72
5.84
5.96
6.07
6.19
6.30
6.41
6.52
6.62
6.72
6.82
6.92
7.02
7.11
7.20
7.29
7.38
7.46
7.54
7.62
7.70
7.77
7.84
7.97
8.10
8.21
8.31
8.40
8.48
8.54
8.59
8.64
8.67
8.68
8.68
8.67
8.65
1.70
2.21
3.15
5.41
0.31
0.57
0.82
1.05
1.27
1.49
1.70
1.91
2.11
2.31
2.50
2.69
2.88
3.06
3.24
3.42
3.59
3.76
3.93
4.10
4.26
4.42
4.58
4.74
4.89
5.04
5.19
5.34
5.48
5.62
5.76
5.90
6.03
6.17
6.30
6.42
6.55
6.67
6.79
6.91
7.02
7.13
7.24
7.35
7.45
7.55
7.65
7.75
7.84
7.93
8.02
8.11
8.19
8.27
8.34
8.42
8.55
8.68
8.79
8.89
8.98
9.05
9.11
9.16
9.19
9.20
9.21
9.19
9.17
9.12
1.98
2.58
3.68
6.33
0.36
0.66
0.95
1.22
1.48
1.74
1.98
2.23
2.46
2.69
2.92
3.14
3.36
3.58
3.79
4.00
4.20
4.40
4.60
4.80
4.99
5.18
5.37
5.55
5.73
5.91
6.08
6.25
6.42
6.58
6.74
6.90
7.06
7.21
7.36
7.51
7.65
7.79
7.92
8.06
8.19
8.31
8.44
8.56
8.67
8.78
8.89
9.00
9.10
9.20
9.29
9.38
9.47
9.55
9.63
9.70
9.84
9.96
10.06
10.15
10.22
10.27
10.30
10.31
10.31
10.28
10.23
10.17
2.29
2.97
4.25
7.30
0.41
0.76
1.09
1.40
1.71
2.00
2.29
2.57
2.84
3.11
3.37
3.63
3.88
4.13
4.38
4.62
4.85
5.09
5.32
5.54
5.76
5.98
6.19
6.40
6.61
6.81
7.01
7.21
7.40
7.59
7.77
7.95
8.12
8.29
8.46
8.62
8.78
8.94
9.09
9.23
9.38
9.51
9.65
9.77
9.90
10.02
10.13
10.24
10.34
10.44
10.54
10.63
10.71
10.79
10.86
10.93
11.05
11.15
11.22
11.28
11.30
11.31
11.29
2.63
3.43
4.90
8.38
0.47
0.87
1.25
1.61
1.96
2.30
2.63
2.95
3.27
3.58
3.88
4.18
4.47
4.76
5.04
5.32
5.59
5.86
6.12
6.38
6.63
6.88
7.12
7.36
7.60
7.83
8.05
8.27
8.49
8.69
8.90
9.10
9.29
9.48
9.66
9.84
10.01
10.18
10.34
10.50
10.65
10.79
10.93
11.06
11.18
11.30
11.41
11.52
11.62
11.71
11.80
11.88
11.95
12.01
12.07
12.12
12.20
12.25
12.26
12.25
3.08
4.02
5.74
9.74
0.55
1.02
1.46
1.89
2.30
2.70
3.08
3.46
3.83
4.20
4.55
4.90
5.24
5.58
5.91
6.23
6.55
6.86
7.16
7.46
7.75
8.04
8.32
8.59
8.86
9.12
9.37
9.62
9.86
10.09
10.32
10.54
10.75
10.95
11.15
11.34
11.52
11.69
11.86
12.01
12.16
12.30
12.43
12.56
12.67
12.77
12.87
12.95
13.03
13.10
13.16
13.20
13.24
13.27
13.28
3.53
4.60
6.57
11.01
0.63
1.17
1.67
2.16
2.63
3.09
3.53
3.96
4.39
4.80
5.21
5.61
6.00
6.38
6.75
7.12
7.48
7.83
8.17
8.50
8.83
9.15
9.46
9.76
10.06
10.34
10.62
10.88
11.14
11.39
11.63
11.86
12.08
12.29
12.48
12.67
12.85
13.02
13.17
13.32
13.45
13.57
13.68
13.78
13.87
13.94
14.00
14.05
14.08
14.10
3.97
5.17
7.37
12.19
0.70
1.31
1.88
2.43
2.96
3.47
3.97
4.46
4.93
5.40
5.85
6.30
6.73
7.16
7.58
7.98
8.38
8.77
9.14
9.51
9.87
10.21
10.55
10.87
11.19
11.49
11.78
12.06
12.33
12.58
12.82
13.05
13.27
13.47
13.66
13.84
14.00
14.15
14.28
14.40
14.50
14.59
14.66
14.71
14.75
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
0.01
0.01
0.02
0.04
0.00
0.00
0.00
0.00
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.04
0.04
0.04
0.04
0.04
0.04
0.04
0.04
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.06
0.06
0.06
0.06
0.06
0.06
0.06
0.06
0.07
0.07
0.07
0.07
0.07
0.07
0.08
0.08
0.08
0.08
0.09
0.09
0.09
0.09
0.10
0.10
0.10
0.10
SUPER TX M=S
Where v > 42 m/s,
please consult our
Applications Engineering
Department
0.06
0.08
0.12
0.23
0.01
0.02
0.02
0.03
0.04
0.05
0.06
0.06
0.07
0.08
0.09
0.10
0.10
0.11
0.12
0.13
0.14
0.14
0.15
0.16
0.17
0.18
0.18
0.19
0.20
0.21
0.22
0.22
0.23
0.24
0.25
0.26
0.26
0.27
0.28
0.29
0.30
0.30
0.31
0.32
0.33
0.34
0.34
0.35
0.36
0.37
0.38
0.38
0.39
0.40
0.41
0.42
0.42
0.43
0.44
0.45
0.46
0.48
0.50
0.51
0.53
0.54
0.56
0.58
0.59
0.61
0.62
0.64
0.66
0.67
power (kW)
speed ratio i
1,27 >1,57
to
1,57
0.08
0.11
0.16
0.32
0.01
0.02
0.03
0.05
0.06
0.07
0.08
0.09
0.10
0.11
0.12
0.14
0.15
0.16
0.17
0.18
0.19
0.20
0.22
0.23
0.24
0.25
0.26
0.27
0.28
0.30
0.31
0.32
0.33
0.34
0.35
0.36
0.37
0.39
0.40
0.41
0.42
0.43
0.44
0.45
0.47
0.48
0.49
0.50
0.51
0.52
0.53
0.54
0.56
0.57
0.58
0.59
0.60
0.61
0.62
0.64
0.66
0.68
0.70
0.73
0.75
0.77
0.79
0.82
0.84
0.86
0.89
0.91
0.93
0.95
0.10
0.13
0.20
0.40
0.01
0.03
0.04
0.06
0.07
0.08
0.10
0.11
0.13
0.14
0.15
0.17
0.18
0.19
0.21
0.22
0.24
0.25
0.26
0.28
0.29
0.31
0.32
0.33
0.35
0.36
0.38
0.39
0.40
0.42
0.43
0.45
0.46
0.47
0.49
0.50
0.52
0.53
0.54
0.56
0.57
0.58
0.60
0.61
0.63
0.64
0.65
0.67
0.68
0.70
0.71
0.72
0.74
0.75
0.77
0.78
0.81
0.84
0.86
0.89
0.92
0.95
0.97
1.00
1.03
1.06
1.09
1.11
1.14
1.17
v (m/s)
Dynamically balanced (for details see DIN 2211)
92
Pulleys
Note: Pulley diameters shown are outside diameters for sections 3VX.
Power Ratings
optibelt SUPER TX M=S Section XPA
Nominal Power Rating PN (kW) for β = 180° and Ld = 2500 mm
Statically balanced
v (m/s)
Pulleys
Table 37
nk
Datum diameter of small pulley ddk (mm)
(min-1)
71
75
80
90
100
112
118
125
140
160
180
200
224
250
280
700
950
1450
2850
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
3100
3200
3300
3400
3500
3600
3700
3800
3900
4000
4100
4200
4300
4400
4500
4600
4700
4800
4900
5000
5100
5200
5300
5400
5500
5600
5700
5800
5900
6000
6100
6200
6300
6400
6500
6600
6700
6800
6900
7000
0.97
1.25
1.75
2.88
0.19
0.34
0.48
0.61
0.74
0.86
0.97
1.09
1.20
1.30
1.41
1.51
1.61
1.70
1.80
1.89
1.98
2.07
2.15
2.24
2.32
2.40
2.48
2.56
2.63
2.71
2.78
2.85
2.92
2.98
3.05
3.11
3.18
3.24
3.30
3.35
3.41
3.46
3.52
3.57
3.62
3.66
3.71
3.75
3.79
3.83
3.87
3.91
3.94
3.97
4.00
4.03
4.06
4.08
4.11
4.13
4.15
4.16
4.18
4.19
4.20
4.21
4.22
4.22
4.22
4.22
4.22
4.22
4.21
4.20
1.14
1.47
2.08
3.49
0.21
0.39
0.56
0.71
0.86
1.00
1.14
1.28
1.41
1.53
1.66
1.78
1.90
2.02
2.13
2.25
2.36
2.47
2.57
2.68
2.78
2.88
2.98
3.07
3.17
3.26
3.35
3.44
3.53
3.62
3.70
3.78
3.86
3.94
4.02
4.09
4.16
4.23
4.30
4.37
4.43
4.50
4.56
4.61
4.67
4.73
4.78
4.83
4.88
4.92
4.97
5.01
5.05
5.09
5.12
5.15
5.18
5.21
5.24
5.26
5.28
5.30
5.32
5.33
5.34
5.35
5.36
5.36
5.36
5.36
1.35
1.75
2.48
4.23
0.25
0.46
0.65
0.83
1.01
1.18
1.35
1.51
1.67
1.82
1.98
2.12
2.27
2.41
2.55
2.69
2.83
2.96
3.09
3.22
3.35
3.48
3.60
3.72
3.84
3.95
4.07
4.18
4.29
4.40
4.50
4.61
4.71
4.81
4.91
5.00
5.09
5.18
5.27
5.36
5.44
5.52
5.60
5.68
5.75
5.82
5.89
5.96
6.03
6.09
6.15
6.20
6.26
6.31
6.36
6.41
6.45
6.49
6.53
6.56
6.59
6.62
6.65
6.67
6.69
6.71
6.73
6.74
6.75
6.75
1.76
2.29
3.29
5.71
0.31
0.58
0.83
1.08
1.31
1.54
1.76
1.98
2.19
2.40
2.60
2.80
3.00
3.20
3.39
3.58
3.76
3.95
4.13
4.31
4.48
4.65
4.82
4.99
5.16
5.32
5.48
5.63
5.79
5.94
6.09
6.23
6.38
6.52
6.65
6.79
6.92
7.05
7.17
7.29
7.41
7.53
7.64
7.75
7.86
7.96
8.06
8.16
8.25
8.34
8.43
8.51
8.59
8.67
8.74
8.81
8.87
8.93
8.99
9.04
9.09
9.14
9.18
9.22
9.25
9.28
9.30
9.32
9.34
9.35
2.17
2.84
4.10
7.16
0.38
0.71
1.02
1.32
1.61
1.89
2.17
2.44
2.71
2.97
3.23
3.48
3.73
3.97
4.22
4.46
4.69
4.92
5.15
5.38
5.60
5.82
6.03
6.25
6.46
6.66
6.86
7.06
7.26
7.45
7.64
7.82
8.00
8.18
8.36
8.53
8.69
8.86
9.01
9.17
9.32
9.47
9.61
9.75
9.88
10.01
10.14
10.26
10.38
10.49
10.60
10.70
10.80
10.89
10.98
11.06
11.14
11.22
11.28
11.35
11.41
11.46
11.51
11.55
11.58
11.62
11.64
11.66
11.67
11.68
2.66
3.48
5.05
8.86
0.46
0.86
1.24
1.61
1.96
2.31
2.66
2.99
3.32
3.65
3.97
4.28
4.59
4.90
5.20
5.50
5.79
6.08
6.36
6.64
6.92
7.19
7.46
7.73
7.99
8.24
8.49
8.74
8.98
9.22
9.45
9.68
9.91
10.13
10.34
10.55
10.75
10.95
11.15
11.33
11.52
11.70
11.87
12.04
12.20
12.35
12.50
12.64
12.78
12.91
13.04
13.16
13.27
13.37
13.47
13.56
13.65
13.73
13.80
13.86
13.92
13.97
14.01
14.05
14.07
14.09
14.10
14.11
14.10
14.09
2.90
3.81
5.52
9.70
0.49
0.93
1.35
1.75
2.14
2.52
2.90
3.27
3.63
3.98
4.33
4.68
5.02
5.35
5.69
6.01
6.33
6.65
6.96
7.27
7.57
7.87
8.17
8.46
8.74
9.02
9.29
9.56
9.83
10.09
10.34
10.59
10.83
11.07
11.31
11.53
11.75
11.97
12.18
12.38
12.58
12.77
12.95
13.13
13.30
13.47
13.63
13.78
13.92
14.06
14.19
14.31
14.42
14.53
14.63
14.72
14.81
14.88
14.95
15.01
15.06
15.10
15.14
15.16
15.18
15.19
15.18
15.17
15.15
15.12
3.18
4.18
6.07
10.66
0.54
1.02
1.48
1.92
2.35
2.77
3.18
3.58
3.98
4.37
4.76
5.14
5.52
5.89
6.25
6.61
6.96
7.31
7.66
8.00
8.33
8.66
8.98
9.30
9.61
9.92
10.22
10.51
10.80
11.09
11.36
11.63
11.90
12.16
12.41
12.66
12.89
13.13
13.35
13.57
13.78
13.98
14.18
14.37
14.55
14.72
14.89
15.05
15.19
15.33
15.47
15.59
15.70
15.81
15.91
15.99
16.07
16.14
16.20
16.25
16.29
16.32
16.34
16.35
16.34
16.33
16.31
16.28
16.23
16.18
3.78
4.97
7.23
12.67
0.64
1.20
1.75
2.27
2.78
3.29
3.78
4.26
4.74
5.21
5.67
6.12
6.57
7.01
7.45
7.88
8.30
8.72
9.12
9.53
9.92
10.31
10.69
11.07
11.44
11.80
12.15
12.50
12.83
13.16
13.49
13.80
14.11
14.40
14.69
14.97
15.24
15.50
15.75
15.99
16.23
16.45
16.66
16.86
17.05
17.23
17.40
17.56
17.71
17.84
17.97
18.08
18.18
18.27
18.34
18.40
18.45
18.49
18.51
18.52
18.52
18.50
18.47
18.42
18.36
4.57
6.02
8.76
15.23
0.76
1.45
2.11
2.74
3.36
3.97
4.57
5.16
5.74
6.30
6.86
7.42
7.96
8.49
9.02
9.54
10.05
10.55
11.04
11.52
11.99
12.46
12.91
13.36
13.79
14.22
14.63
15.03
15.42
15.81
16.18
16.53
16.88
17.21
17.53
17.84
18.14
18.42
18.69
18.94
19.18
19.41
19.62
19.82
20.00
20.16
20.31
20.44
20.56
20.66
20.74
20.81
20.85
20.88
20.89
5.35
7.06
10.26
17.65
0.89
1.69
2.46
3.21
3.94
4.65
5.35
6.04
6.72
7.39
8.04
8.69
9.32
9.95
10.56
11.16
11.75
12.33
12.90
13.46
14.00
14.53
15.05
15.55
16.04
16.52
16.99
17.43
17.87
18.29
18.69
19.08
19.44
19.80
20.13
20.45
20.75
21.03
21.29
21.54
21.76
21.96
22.15
22.31
22.45
22.56
22.66
22.73
22.78
22.81
6.13
8.08
11.73
19.92
1.02
1.93
2.82
3.67
4.51
5.33
6.13
6.92
7.70
8.46
9.21
9.94
10.67
11.38
12.07
12.75
13.42
14.07
14.71
15.33
15.94
16.53
17.10
17.65
18.19
18.71
19.21
19.69
20.15
20.59
21.01
21.41
21.78
22.14
22.46
22.77
23.05
23.31
23.54
23.74
23.92
24.07
24.19
24.28
24.35
7.05
9.29
13.45
22.43
1.17
2.22
3.24
4.22
5.19
6.13
7.05
7.96
8.85
9.73
10.58
11.42
12.25
13.05
13.84
14.61
15.36
16.09
16.81
17.50
18.17
18.81
19.44
20.04
20.62
21.17
21.69
22.19
22.66
23.11
23.52
23.91
24.26
24.58
24.87
25.13
25.36
25.55
25.70
25.82
8.04
10.58
15.27
24.85
1.33
2.53
3.69
4.82
5.91
6.99
8.04
9.07
10.09
11.08
12.05
13.00
13.92
14.83
15.71
16.56
17.40
18.20
18.98
19.73
20.45
21.15
21.81
22.44
23.04
23.60
24.13
24.62
25.08
25.49
25.87
26.21
26.50
26.75
26.96
9.17
12.05
17.30
27.23
1.51
2.89
4.21
5.49
6.75
7.97
9.17
10.34
11.49
12.61
13.70
14.77
15.80
16.81
17.79
18.73
19.64
20.52
21.35
22.16
22.92
23.64
24.32
24.96
25.55
26.09
26.58
27.03
27.42
27.77
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
0.02
0.03
0.04
0.08
0.00
0.01
0.01
0.01
0.01
0.02
0.02
0.02
0.03
0.03
0.03
0.04
0.04
0.04
0.04
0.05
0.05
0.05
0.06
0.06
0.06
0.06
0.07
0.07
0.07
0.08
0.08
0.08
0.08
0.09
0.09
0.09
0.10
0.10
0.10
0.11
0.11
0.11
0.11
0.12
0.12
0.12
0.13
0.13
0.13
0.13
0.14
0.14
0.14
0.15
0.15
0.15
0.16
0.16
0.16
0.16
0.17
0.17
0.17
0.18
0.18
0.18
0.18
0.19
0.19
0.19
0.20
0.20
0.20
0.21
SUPER TX M=S
Where v > 42 m/s,
please consult our
Applications Engineering
Department
0.13
0.18
0.27
0.54
0.02
0.04
0.06
0.08
0.09
0.11
0.13
0.15
0.17
0.19
0.21
0.23
0.25
0.27
0.28
0.30
0.32
0.34
0.36
0.38
0.40
0.42
0.44
0.45
0.47
0.49
0.51
0.53
0.55
0.57
0.59
0.61
0.63
0.64
0.66
0.68
0.70
0.72
0.74
0.76
0.78
0.80
0.81
0.83
0.85
0.87
0.89
0.91
0.93
0.95
0.97
0.98
1.00
1.02
1.04
1.06
1.08
1.10
1.12
1.14
1.16
1.17
1.19
1.21
1.23
1.25
1.27
1.29
1.31
1.33
power (kW)
speed ratio i
1,27 >1,57
to
1,57
0.19
0.26
0.39
0.77
0.03
0.05
0.08
0.11
0.13
0.16
0.19
0.22
0.24
0.27
0.30
0.32
0.35
0.38
0.40
0.43
0.46
0.48
0.51
0.54
0.56
0.59
0.62
0.65
0.67
0.70
0.73
0.75
0.78
0.81
0.83
0.86
0.89
0.91
0.94
0.97
0.99
1.02
1.05
1.08
1.10
1.13
1.16
1.18
1.21
1.24
1.26
1.29
1.32
1.34
1.37
1.40
1.42
1.45
1.48
1.51
1.53
1.56
1.59
1.61
1.64
1.67
1.69
1.72
1.75
1.77
1.80
1.83
1.86
1.88
0.23
0.31
0.48
0.94
0.03
0.07
0.10
0.13
0.16
0.20
0.23
0.26
0.30
0.33
0.36
0.40
0.43
0.46
0.49
0.53
0.56
0.59
0.63
0.66
0.69
0.73
0.76
0.79
0.82
0.86
0.89
0.92
0.96
0.99
1.02
1.05
1.09
1.12
1.15
1.19
1.22
1.25
1.29
1.32
1.35
1.38
1.42
1.45
1.48
1.52
1.55
1.58
1.62
1.65
1.68
1.71
1.75
1.78
1.81
1.85
1.88
1.91
1.94
1.98
2.01
2.04
2.08
2.11
2.14
2.18
2.21
2.24
2.27
2.31
v (m/s)
Dynamically balanced (for details see DIN 2211)
Pulleys
93
Power Ratings
optibelt SUPER TX M=S Section XPB, 5VX
Nominal Power Rating PN (kW) for β = 180° and Ld = 3550 mm
Statically balanced
v (m/s)
Pulleys
Table 38
nk
Datum diameter of small pulley ddk (mm)
(min-1)
112
118
125
132
140
150
160
180
200
224
250
280
315
700
950
1450
2850
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
3100
3200
3300
3400
3500
3600
3700
3800
3900
4000
4100
4200
4300
4400
4500
4600
4700
4800
4900
5000
5100
5200
5300
5400
5500
5600
5700
5800
5900
6000
2.87
3.79
5.52
9.74
0.48
0.91
1.32
1.72
2.11
2.49
2.87
3.24
3.61
3.97
4.32
4.67
5.02
5.36
5.69
6.02
6.35
6.67
6.99
7.30
7.61
7.91
8.20
8.50
8.78
9.06
9.34
9.61
9.87
10.13
10.38
10.62
10.86
11.09
11.32
11.54
11.75
11.95
12.15
12.34
12.52
12.70
12.87
13.03
13.18
13.32
13.46
13.58
13.70
13.81
13.91
14.00
14.08
14.15
14.22
14.27
14.31
14.34
14.37
14.38
3.26
4.31
6.30
11.15
0.54
1.02
1.49
1.95
2.39
2.83
3.26
3.68
4.10
4.51
4.92
5.32
5.72
6.11
6.49
6.87
7.25
7.62
7.98
8.34
8.69
9.04
9.38
9.72
10.05
10.37
10.69
11.00
11.30
11.60
11.89
12.17
12.44
12.71
12.97
13.22
13.47
13.70
13.93
14.15
14.36
14.56
14.75
14.94
15.11
15.28
15.43
15.58
15.71
15.84
15.95
16.06
16.15
16.23
16.30
16.36
16.41
16.45
16.47
16.49
3.71
4.91
7.20
12.78
0.61
1.16
1.69
2.21
2.72
3.22
3.71
4.20
4.68
5.15
5.62
6.08
6.53
6.98
7.42
7.86
8.29
8.72
9.14
9.55
9.95
10.35
10.75
11.13
11.51
11.88
12.25
12.60
12.95
13.29
13.62
13.95
14.26
14.57
14.87
15.15
15.43
15.70
15.96
16.21
16.45
16.68
16.90
17.11
17.31
17.49
17.67
17.83
17.98
18.12
18.25
18.36
18.46
18.55
18.63
18.69
18.74
18.77
18.80
18.80
4.16
5.52
8.10
14.38
0.67
1.29
1.89
2.47
3.05
3.61
4.16
4.71
5.25
5.78
6.31
6.83
7.34
7.85
8.35
8.84
9.33
9.81
10.28
10.75
11.21
11.66
12.10
12.53
12.96
13.38
13.79
14.19
14.58
14.96
15.33
15.70
16.05
16.39
16.73
17.05
17.36
17.66
17.95
18.23
18.49
18.75
18.99
19.22
19.43
19.63
19.82
20.00
20.16
20.31
20.44
20.56
20.66
20.75
20.83
20.88
20.93
20.95
20.96
20.95
4.68
6.21
9.12
16.20
0.75
1.45
2.12
2.78
3.42
4.05
4.68
5.30
5.91
6.51
7.10
7.69
8.27
8.84
9.40
9.96
10.51
11.05
11.58
12.11
12.62
13.13
13.63
14.12
14.60
15.07
15.53
15.98
16.41
16.84
17.26
17.66
18.06
18.44
18.81
19.17
19.51
19.84
20.16
20.46
20.75
21.03
21.29
21.54
21.77
21.98
22.18
22.37
22.53
22.68
22.82
22.93
23.03
23.11
23.17
23.22
23.24
23.25
23.24
23.20
5.32
7.07
10.39
18.42
0.85
1.64
2.40
3.15
3.89
4.61
5.32
6.03
6.72
7.41
8.09
8.76
9.42
10.07
10.71
11.35
11.97
12.59
13.20
13.79
14.38
14.96
15.52
16.08
16.62
17.15
17.67
18.17
18.67
19.15
19.61
20.07
20.51
20.93
21.34
21.74
22.12
22.48
22.82
23.16
23.47
23.76
24.04
24.30
24.54
24.76
24.97
25.15
25.31
25.46
25.58
25.68
25.76
25.82
25.85
5.96
7.92
11.65
20.60
0.95
1.83
2.69
3.53
4.35
5.16
5.96
6.75
7.53
8.30
9.07
9.82
10.56
11.29
12.01
12.73
13.43
14.12
14.79
15.46
16.12
16.76
17.39
18.00
18.61
19.19
19.77
20.33
20.87
21.40
21.91
22.41
22.89
23.35
23.79
24.22
24.62
25.01
25.38
25.73
26.05
26.36
26.64
26.91
27.15
27.36
27.56
27.73
27.88
28.00
28.10
28.17
28.21
28.23
28.22
7.24
9.62
14.15
24.81
1.14
2.21
3.25
4.27
5.27
6.26
7.24
8.20
9.15
10.09
11.01
11.93
12.83
13.71
14.59
15.45
16.29
17.12
17.94
18.74
19.52
20.29
21.03
21.76
22.48
23.17
23.84
24.49
25.12
25.73
26.32
26.88
27.42
27.93
28.42
28.89
29.32
29.74
30.12
30.47
30.80
31.10
31.37
31.60
31.81
31.98
32.12
32.22
32.30
32.33
8.50
11.31
16.61
28.80
1.34
2.59
3.82
5.01
6.19
7.36
8.50
9.64
10.75
11.85
12.94
14.01
15.06
16.10
17.12
18.12
19.11
20.07
21.01
21.93
22.83
23.71
24.56
25.39
26.20
26.97
27.73
28.45
29.14
29.81
30.45
31.05
31.62
32.16
32.67
33.14
33.57
33.97
34.33
34.65
34.94
35.18
35.38
35.54
35.66
10.01
13.31
19.52
33.28
1.57
3.05
4.49
5.90
7.29
8.66
10.01
11.35
12.66
13.95
15.23
16.48
17.71
18.92
20.11
21.27
22.41
23.52
24.60
25.65
26.67
27.67
28.63
29.55
30.45
31.30
32.12
32.90
33.64
34.34
35.00
35.62
36.19
36.72
37.19
37.62
38.00
38.33
38.61
38.84
11.64
15.46
22.60
37.71
1.82
3.54
5.22
6.86
8.48
10.07
11.64
13.19
14.71
16.20
17.67
19.12
20.53
21.92
23.27
24.59
25.88
27.13
28.35
29.52
30.66
31.75
32.80
33.80
34.76
35.67
36.52
37.32
38.07
38.77
39.40
39.98
40.49
40.94
41.33
13.50
17.91
26.06
42.21
2.11
4.11
6.05
7.96
9.84
11.68
13.50
15.29
17.04
18.76
20.45
22.10
23.72
25.29
26.83
28.31
29.75
31.15
32.49
33.77
35.00
36.18
37.29
38.34
39.32
40.24
41.08
41.85
42.55
43.17
15.65
20.72
29.97
46.56
2.45
4.76
7.02
9.23
11.41
13.55
15.65
17.71
19.73
21.70
23.63
25.51
27.34
29.11
30.82
32.48
34.06
35.58
37.03
38.40
39.70
40.91
42.04
43.08
44.02
44.87
45.62
46.27
46.81
355
400
18.07 20.76
23.87 27.33
34.25 38.79
2.83
5.51
8.12
10.68
13.19
15.66
18.07
20.43
22.74
24.99
27.17
29.29
31.33
33.30
35.18
36.98
38.69
40.30
41.82
43.22
44.52
45.69
46.75
47.69
48.49
3.26
6.35
9.35
12.30
15.18
18.00
20.76
23.45
26.06
28.59
31.03
33.38
35.63
37.77
39.79
41.70
43.47
45.12
46.61
47.96
49.16
50.18
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
0.04
0.06
0.09
0.18
0.01
0.01
0.02
0.03
0.03
0.04
0.04
0.05
0.06
0.06
0.07
0.08
0.08
0.09
0.09
0.10
0.11
0.11
0.12
0.13
0.13
0.14
0.15
0.15
0.16
0.16
0.17
0.18
0.18
0.19
0.20
0.20
0.21
0.22
0.22
0.23
0.23
0.24
0.25
0.25
0.26
0.27
0.27
0.28
0.28
0.29
0.30
0.30
0.31
0.32
0.32
0.33
0.34
0.34
0.35
0.35
0.36
0.37
0.37
0.38
SUPER TX M=S
0.29
0.39
0.59
1.17
0.04
0.08
0.12
0.16
0.20
0.25
0.29
0.33
0.37
0.41
0.45
0.49
0.53
0.57
0.61
0.65
0.70
0.74
0.78
0.82
0.86
0.90
0.94
0.98
1.02
1.06
1.10
1.15
1.19
1.23
1.27
1.31
1.35
1.39
1.43
1.47
1.51
1.55
1.60
1.64
1.68
1.72
1.76
1.80
1.84
1.88
1.92
1.96
2.00
2.05
2.09
2.13
2.17
2.21
2.25
2.29
2.33
2.37
2.41
2.45
power (kW)
speed ratio i
1,27 >1,57
to
1,57
0.41
0.55
0.84
1.65
0.06
0.12
0.17
0.23
0.29
0.35
0.41
0.46
0.52
0.58
0.64
0.70
0.75
0.81
0.87
0.93
0.99
1.05
1.10
1.16
1.22
1.28
1.34
1.39
1.45
1.51
1.57
1.63
1.68
1.74
1.80
1.86
1.92
1.97
2.03
2.09
2.15
2.21
2.26
2.32
2.38
2.44
2.50
2.56
2.61
2.67
2.73
2.79
2.85
2.90
2.96
3.02
3.08
3.14
3.19
3.25
3.31
3.37
3.43
3.48
0.50
0.68
1.03
2.03
0.07
0.14
0.21
0.28
0.36
0.43
0.50
0.57
0.64
0.71
0.78
0.85
0.93
1.00
1.07
1.14
1.21
1.28
1.35
1.42
1.50
1.57
1.64
1.71
1.78
1.85
1.92
1.99
2.06
2.14
2.21
2.28
2.35
2.42
2.49
2.56
2.63
2.71
2.78
2.85
2.92
2.99
3.06
3.13
3.20
3.28
3.35
3.42
3.49
3.56
3.63
3.70
3.77
3.84
3.92
3.99
4.06
4.13
4.20
4.27
Where v > 42 m/s,
please consult our
Applications Engineering
Department
v (m/s)
Dynamically balanced (for details see DIN 2211)
94
Pulleys
Note: Pulley diameters shown are outside diameters for sections 5VX.
Power Ratings
optibelt SUPER TX M=S Section XPC
Nominal Power Rating PN (kW) for β = 180° and Ld = 5600 mm
Statically balanced
v (m/s)
Pulleys
Table 39
nk
Datum diameter of small pulley ddk (mm)
(min-1)
180
200
224
250
280
315
335
355
400
450
500
560
630
710
700
950
1450
2850
50
100
150
200
250
300
350
400
450
500
550
600
650
700
750
800
850
900
950
1000
1050
1100
1150
1200
1250
1300
1350
1400
1450
1500
1550
1600
1650
1700
1750
1800
1850
1900
1950
2000
2050
2100
2150
2200
2250
2300
2350
2400
2450
2500
2550
2600
2650
2700
2750
2800
2850
2900
2950
3000
3050
3100
3150
3200
3250
3300
3350
3400
3450
3500
9.39
12.53
18.50
31.92
0.73
1.43
2.12
2.81
3.48
4.15
4.82
5.49
6.14
6.80
7.45
8.10
8.74
9.39
10.02
10.66
11.29
11.91
12.53
13.15
13.76
14.37
14.98
15.58
16.17
16.76
17.35
17.93
18.50
19.07
19.64
20.19
20.75
21.29
21.83
22.37
22.90
23.42
23.93
24.44
24.95
25.44
25.93
26.41
26.88
27.35
27.80
28.25
28.69
29.13
29.55
29.97
30.38
30.77
31.16
31.55
31.92
32.28
32.63
32.97
33.31
33.63
33.94
34.24
34.54
34.82
35.09
35.35
35.59
35.83
11.26
15.04
22.16
37.66
0.87
1.71
2.54
3.36
4.17
4.98
5.78
6.58
7.37
8.16
8.94
9.72
10.49
11.26
12.03
12.79
13.54
14.29
15.04
15.77
16.51
17.24
17.96
18.67
19.38
20.09
20.78
21.47
22.16
22.83
23.50
24.16
24.81
25.46
26.10
26.73
27.35
27.96
28.56
29.16
29.74
30.32
30.88
31.44
31.98
32.52
33.04
33.55
34.06
34.55
35.03
35.50
35.95
36.40
36.83
37.25
37.66
38.05
38.43
38.80
39.16
39.50
39.83
40.14
40.44
40.72
40.99
41.25
41.49
41.71
13.50
18.01
26.46
43.99
1.04
2.05
3.04
4.03
5.00
5.97
6.93
7.89
8.84
9.78
10.72
11.65
12.58
13.50
14.42
15.33
16.23
17.13
18.01
18.90
19.77
20.64
21.49
22.34
23.19
24.02
24.84
25.66
26.46
27.26
28.04
28.82
29.58
30.34
31.08
31.81
32.53
33.24
33.93
34.61
35.28
35.94
36.58
37.21
37.82
38.42
39.01
39.58
40.14
40.68
41.20
41.71
42.20
42.67
43.13
43.57
43.99
44.40
44.79
45.15
45.50
45.83
46.14
46.43
46.71
46.96
47.19
47.40
47.58
47.75
15.91
21.21
31.02
50.10
1.23
2.41
3.59
4.74
5.90
7.04
8.17
9.30
10.42
11.53
12.64
13.74
14.83
15.91
16.99
18.06
19.12
20.17
21.21
22.24
23.26
24.27
25.27
26.26
27.23
28.20
29.15
30.09
31.02
31.93
32.84
33.72
34.59
35.45
36.29
37.12
37.93
38.72
39.50
40.26
41.00
41.72
42.42
43.11
43.77
44.42
45.05
45.65
46.24
46.80
47.34
47.86
48.35
48.83
49.28
49.70
50.10
50.48
50.83
51.15
51.45
51.73
51.97
52.19
52.38
18.68
24.84
36.13
56.06
1.44
2.83
4.21
5.57
6.92
8.27
9.60
10.92
12.24
13.55
14.84
16.13
17.41
18.68
19.93
21.18
22.41
23.63
24.84
26.04
27.22
28.39
29.54
30.68
31.81
32.91
34.00
35.07
36.13
37.16
38.18
39.18
40.16
41.11
42.05
42.96
43.85
44.72
45.56
46.38
47.18
47.95
48.69
49.41
50.10
50.76
51.40
52.00
52.58
53.13
53.64
54.13
54.58
55.00
55.39
55.74
56.06
56.35
56.60
56.81
21.87
29.02
41.86
61.37
1.69
3.32
4.94
6.53
8.12
9.70
11.26
12.81
14.35
15.88
17.40
18.90
20.39
21.87
23.33
24.78
26.21
27.62
29.02
30.40
31.76
33.10
34.42
35.71
36.99
38.24
39.47
40.68
41.86
43.02
44.14
45.24
46.32
47.36
48.37
49.35
50.30
51.22
52.10
52.95
53.77
54.55
55.29
56.00
56.66
57.29
57.88
58.42
58.93
59.39
59.81
60.18
60.51
60.80
61.04
23.67
31.37
45.02
25.47
33.69
48.08
29.46
38.80
54.61
33.82
44.30
61.20
38.08
49.57
67.03
43.06
55.56
72.90
48.67
62.06
78.01
54.78
68.76
1.83
3.60
5.35
7.08
8.80
10.51
12.20
13.88
15.55
17.21
18.85
20.47
22.08
23.67
25.25
26.81
28.35
29.87
31.37
32.84
34.30
35.73
37.14
38.52
39.88
41.20
42.50
43.78
45.02
46.23
47.41
48.55
49.66
50.74
51.78
52.78
53.75
54.67
55.56
56.40
57.21
57.97
58.68
59.35
59.98
60.56
61.09
61.57
62.00
62.38
1.97
3.88
5.76
7.63
9.48
11.32
13.15
14.95
16.75
18.53
20.29
22.04
23.76
25.47
27.16
28.82
30.47
32.09
33.69
35.26
36.81
38.32
39.81
41.27
42.70
44.10
45.46
46.79
48.08
49.34
50.55
51.73
52.87
53.97
55.02
56.03
57.00
57.92
58.79
59.61
60.39
61.11
61.78
62.39
62.96
2.28
4.50
6.69
8.86
11.01
13.14
15.26
17.35
19.43
21.48
23.51
25.52
27.51
29.46
31.39
33.29
35.16
37.00
38.80
40.57
42.30
43.99
45.64
47.25
48.82
50.34
51.81
53.23
54.61
55.93
57.19
58.40
59.56
60.65
61.69
62.66
63.57
64.41
65.18
65.89
66.52
67.08
67.57
67.98
68.31
2.64
5.20
7.72
10.22
12.70
15.16
17.59
20.00
22.38
24.73
27.05
29.34
31.60
33.82
36.00
38.14
40.24
42.29
44.30
46.25
48.15
50.00
51.79
53.52
55.19
56.80
58.33
59.80
61.20
62.52
63.77
64.94
66.03
67.03
67.95
68.78
69.52
70.17
70.72
71.17
2.99
5.89
8.75
11.58
14.39
17.16
19.91
22.62
25.30
27.94
30.55
33.11
35.62
38.08
40.50
42.85
45.15
47.39
49.57
51.67
53.71
55.67
57.55
59.35
61.07
62.70
64.24
65.68
67.03
68.28
69.42
70.45
71.38
72.19
72.88
3.40
6.71
9.98
13.21
16.40
19.56
22.67
25.74
28.77
31.75
34.67
37.53
40.33
43.06
45.73
48.31
50.82
53.23
55.56
57.80
59.93
61.97
63.89
65.70
67.39
68.97
70.41
71.72
72.90
73.93
3.89
7.68
11.41
15.09
18.73
22.32
25.86
29.34
32.76
36.10
39.37
42.56
45.66
48.67
51.58
54.38
57.06
59.63
62.06
64.37
66.53
68.55
70.42
72.12
73.66
75.02
76.21
77.21
78.01
4.45
8.77
13.03
17.24
21.38
25.46
29.47
33.39
37.23
40.97
44.60
48.12
51.52
54.78
57.90
60.86
63.67
66.31
68.76
71.03
73.09
74.95
76.59
78.00
79.17
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
0.08
0.10
0.16
0.31
0.01
0.01
0.02
0.02
0.03
0.03
0.04
0.04
0.05
0.05
0.06
0.07
0.07
0.08
0.08
0.09
0.09
0.10
0.10
0.11
0.11
0.12
0.12
0.13
0.14
0.14
0.15
0.15
0.16
0.16
0.17
0.17
0.18
0.18
0.19
0.20
0.20
0.21
0.21
0.22
0.22
0.23
0.23
0.24
0.24
0.25
0.26
0.26
0.27
0.27
0.28
0.28
0.29
0.29
0.30
0.30
0.31
0.31
0.32
0.33
0.33
0.34
0.34
0.35
0.35
0.36
0.36
0.37
0.37
0.38
SUPER TX M=S
Where v > 42 m/s,
please consult our
Applications Engineering
Department
0.49
0.67
1.02
2.00
0.04
0.07
0.11
0.14
0.18
0.21
0.25
0.28
0.32
0.35
0.39
0.42
0.46
0.49
0.53
0.56
0.60
0.63
0.67
0.70
0.74
0.77
0.81
0.84
0.88
0.91
0.95
0.98
1.02
1.05
1.09
1.12
1.16
1.19
1.23
1.26
1.30
1.33
1.37
1.40
1.44
1.47
1.51
1.54
1.58
1.61
1.65
1.68
1.72
1.75
1.79
1.82
1.86
1.89
1.93
1.96
2.00
2.04
2.07
2.11
2.14
2.18
2.21
2.25
2.28
2.32
2.35
2.39
2.42
2.46
power (kW)
speed ratio i
1,27 >1,57
to
1,57
0.70
0.95
1.44
2.84
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
0.50
0.55
0.60
0.65
0.70
0.75
0.80
0.85
0.90
0.95
1.00
1.05
1.10
1.15
1.20
1.25
1.29
1.34
1.39
1.44
1.49
1.54
1.59
1.64
1.69
1.74
1.79
1.84
1.89
1.94
1.99
2.04
2.09
2.14
2.19
2.24
2.29
2.34
2.39
2.44
2.49
2.54
2.59
2.64
2.69
2.74
2.79
2.84
2.89
2.94
2.99
3.04
3.09
3.14
3.19
3.24
3.29
3.34
3.39
3.44
3.49
0.85
1.16
1.77
3.48
0.06
0.12
0.18
0.24
0.31
0.37
0.43
0.49
0.55
0.61
0.67
0.73
0.79
0.85
0.92
0.98
1.04
1.10
1.16
1.22
1.28
1.34
1.40
1.47
1.53
1.59
1.65
1.71
1.77
1.83
1.89
1.95
2.02
2.08
2.14
2.20
2.26
2.32
2.38
2.44
2.50
2.56
2.63
2.69
2.75
2.81
2.87
2.93
2.99
3.05
3.11
3.18
3.24
3.30
3.36
3.42
3.48
3.54
3.60
3.66
3.72
3.79
3.85
3.91
3.97
4.03
4.09
4.15
4.21
4.27
v (m/s)
Dynamically balanced (for details see DIN 2211)
Pulleys
95
Power Ratings
optibelt SUPER TX M=S Section ZX/X10
Nominal Power Rating PN (kW) for β = 180° and Ld = 822 mm
Statically balanced
v (m/s)
Pulleys
Table 40
nk
Datum diameter of small pulley ddk (mm)
(min-1)
40
45
50
56
63
71
80
700
950
1450
2850
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
3100
3200
3300
3400
3500
3600
3700
3800
3900
4000
4100
4200
4300
4400
4500
4600
4700
4800
4900
5000
5100
5200
5300
5400
5500
5600
5800
6000
6200
6400
6600
6800
7000
7200
7400
7600
7800
8000
8200
8400
0.22
0.27
0.36
0.54
0.05
0.09
0.12
0.15
0.17
0.20
0.22
0.24
0.26
0.28
0.30
0.32
0.34
0.36
0.37
0.39
0.40
0.42
0.43
0.44
0.46
0.47
0.48
0.49
0.50
0.51
0.52
0.53
0.54
0.55
0.56
0.57
0.58
0.59
0.60
0.60
0.61
0.62
0.62
0.63
0.64
0.64
0.65
0.65
0.66
0.66
0.67
0.67
0.68
0.68
0.68
0.69
0.69
0.69
0.69
0.70
0.70
0.70
0.71
0.71
0.71
0.71
0.71
0.71
0.70
0.70
0.70
0.69
0.68
0.68
0.27
0.34
0.45
0.69
0.06
0.10
0.14
0.18
0.21
0.24
0.27
0.30
0.32
0.35
0.37
0.40
0.42
0.44
0.46
0.48
0.50
0.52
0.54
0.56
0.57
0.59
0.61
0.62
0.64
0.65
0.67
0.68
0.70
0.71
0.72
0.74
0.75
0.76
0.77
0.78
0.79
0.80
0.81
0.82
0.83
0.84
0.85
0.86
0.87
0.87
0.88
0.89
0.90
0.90
0.91
0.92
0.92
0.93
0.93
0.94
0.95
0.96
0.96
0.97
0.98
0.98
0.98
0.98
0.99
0.99
0.99
0.98
0.98
0.98
0.32
0.40
0.54
0.84
0.07
0.12
0.16
0.21
0.25
0.28
0.32
0.35
0.38
0.41
0.44
0.47
0.50
0.52
0.55
0.58
0.60
0.62
0.65
0.67
0.69
0.71
0.73
0.75
0.77
0.79
0.81
0.83
0.84
0.86
0.88
0.89
0.91
0.93
0.94
0.95
0.97
0.98
1.00
1.01
1.02
1.03
1.05
1.06
1.07
1.08
1.09
1.10
1.11
1.12
1.13
1.14
1.15
1.15
1.16
1.17
1.18
1.20
1.21
1.22
1.23
1.24
1.24
1.25
1.25
1.25
1.26
1.26
1.25
1.25
0.37
0.47
0.64
1.01
0.08
0.14
0.19
0.24
0.29
0.33
0.37
0.41
0.45
0.49
0.52
0.56
0.59
0.62
0.65
0.69
0.71
0.74
0.77
0.80
0.83
0.85
0.88
0.90
0.93
0.95
0.97
0.99
1.02
1.04
1.06
1.08
1.10
1.12
1.14
1.16
1.17
1.19
1.21
1.23
1.24
1.26
1.27
1.29
1.30
1.32
1.33
1.34
1.36
1.37
1.38
1.39
1.40
1.41
1.42
1.43
1.45
1.47
1.49
1.50
1.51
1.52
1.53
1.54
1.55
1.55
1.55
1.56
1.56
1.55
0.44
0.55
0.75
1.20
0.09
0.16
0.22
0.28
0.34
0.39
0.44
0.48
0.53
0.57
0.62
0.66
0.70
0.74
0.77
0.81
0.85
0.88
0.91
0.95
0.98
1.01
1.04
1.07
1.10
1.13
1.16
1.18
1.21
1.24
1.26
1.29
1.31
1.34
1.36
1.38
1.40
1.43
1.45
1.47
1.49
1.51
1.53
1.54
1.56
1.58
1.60
1.61
1.63
1.64
1.66
1.67
1.69
1.70
1.71
1.72
1.75
1.77
1.79
1.81
1.82
1.83
1.84
1.85
1.86
1.86
1.87
1.87
1.87
1.86
0.51
0.64
0.88
1.41
0.10
0.19
0.26
0.33
0.39
0.45
0.51
0.56
0.62
0.67
0.72
0.77
0.81
0.86
0.90
0.95
0.99
1.03
1.07
1.11
1.15
1.19
1.22
1.26
1.29
1.33
1.36
1.39
1.43
1.46
1.49
1.52
1.55
1.57
1.60
1.63
1.66
1.68
1.71
1.73
1.75
1.78
1.80
1.82
1.84
1.86
1.88
1.90
1.92
1.94
1.96
1.97
1.99
2.00
2.02
2.03
2.06
2.08
2.10
2.12
2.14
2.15
2.16
2.17
2.17
2.18
2.18
2.17
2.17
2.16
0.59
0.74
1.02
1.64
0.12
0.21
0.30
0.38
0.45
0.52
0.59
0.65
0.71
0.77
0.83
0.89
0.94
1.00
1.05
1.10
1.15
1.20
1.24
1.29
1.34
1.38
1.42
1.46
1.50
1.54
1.58
1.62
1.66
1.70
1.73
1.77
1.80
1.83
1.86
1.89
1.93
1.95
1.98
2.01
2.04
2.07
2.09
2.12
2.14
2.16
2.18
2.21
2.23
2.25
2.27
2.28
2.30
2.32
2.33
2.35
2.38
2.40
2.42
2.44
2.45
2.46
2.47
2.47
2.47
2.47
2.46
2.45
2.43
2.41
90
100
112
0.67
0.76
0.85
0.85
0.96
1.09
1.18
1.32
1.50
1.88
2.12
2.39
0.14
0.15
0.17
0.24
0.27
0.31
0.34
0.38
0.43
0.43
0.48
0.54
0.51
0.58
0.65
0.60
0.67
0.76
0.67
0.76
0.85
0.75
0.84
0.95
0.82
0.92
1.04
0.89
1.00
1.13
0.95
1.07
1.21
1.02
1.15
1.30
1.08
1.22
1.38
1.14
1.29
1.46
1.20
1.36
1.53
1.26
1.42
1.61
1.32
1.49
1.68
1.38
1.55
1.75
1.43
1.61
1.82
1.48
1.67
1.89
1.53
1.73
1.95
1.59
1.78
2.01
1.63
1.84
2.08
1.68
1.89
2.14
1.73
1.95
2.19
1.78
2.00
2.25
1.82
2.05
2.31
1.86
2.09
2.36
1.91
2.14
2.41
1.95
2.19
2.46
1.99
2.23
2.51
2.03
2.28
2.56
2.07
2.32
2.60
2.10
2.36
2.65
2.14
2.40
2.69
2.17
2.44
2.73
2.21
2.47
2.77
2.24
2.51
2.81
2.27
2.54
2.84
2.30
2.58
2.88
2.33
2.61
2.91
2.36
2.64
2.94
2.39
2.67
2.97
2.42
2.70
3.00
2.44
2.72
3.02
2.47
2.75
3.05
2.49
2.77
3.07
2.52
2.80
3.09
2.54
2.82
3.11
2.56
2.84
3.13
2.58
2.86
3.14
2.60
2.87
3.16
2.61
2.89
3.17
2.63
2.91
3.18
2.65
2.92
3.19
2.66
2.93
3.20
2.69
2.95
3.21
2.71
2.97
3.21
2.72
2.97
3.20
2.74
2.98
3.18
2.74
2.97
3.16
2.75
2.96
3.13
2.74
2.95
3.09
2.74
2.93
3.04
2.73
2.90
2.99
2.71
Where
v
>
30
m/s,
2.69
2.66 please consult our
Applications Engineering
Department
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
0.00
0.01
0.01
0.02
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.04
0.04
0.04
0.04
0.04
0.04
0.04
0.04
0.04
0.04
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.06
0.06
SUPER TX M=S
0.02
0.02
0.04
0.07
0.00
0.01
0.01
0.01
0.01
0.02
0.02
0.02
0.02
0.03
0.03
0.03
0.03
0.04
0.04
0.04
0.04
0.05
0.05
0.05
0.05
0.06
0.06
0.06
0.06
0.07
0.07
0.07
0.07
0.08
0.08
0.08
0.08
0.09
0.09
0.09
0.09
0.10
0.10
0.10
0.10
0.11
0.11
0.11
0.12
0.12
0.12
0.12
0.13
0.13
0.13
0.13
0.14
0.14
0.14
0.14
0.15
0.15
0.16
0.16
0.17
0.17
0.18
0.18
0.19
0.19
0.20
0.20
0.21
0.21
power (kW)
speed ratio i
1,27 >1,57
to
1,57
0.03
0.04
0.05
0.11
0.00
0.01
0.01
0.01
0.02
0.02
0.03
0.03
0.03
0.04
0.04
0.04
0.05
0.05
0.06
0.06
0.06
0.07
0.07
0.07
0.08
0.08
0.08
0.09
0.09
0.10
0.10
0.10
0.11
0.11
0.11
0.12
0.12
0.13
0.13
0.13
0.14
0.14
0.14
0.15
0.15
0.15
0.16
0.16
0.17
0.17
0.17
0.18
0.18
0.18
0.19
0.19
0.20
0.20
0.20
0.21
0.21
0.22
0.23
0.24
0.24
0.25
0.26
0.27
0.27
0.28
0.29
0.30
0.30
0.31
v (m/s)
Dynamically balanced (for details see DIN 2211)
96
Pulleys
0.04
0.05
0.08
0.16
0.01
0.01
0.02
0.02
0.03
0.03
0.04
0.05
0.05
0.06
0.06
0.07
0.07
0.08
0.09
0.09
0.10
0.10
0.11
0.11
0.12
0.13
0.13
0.14
0.14
0.15
0.15
0.16
0.17
0.17
0.18
0.18
0.19
0.19
0.20
0.21
0.21
0.22
0.22
0.23
0.23
0.24
0.25
0.25
0.26
0.26
0.27
0.27
0.28
0.29
0.29
0.30
0.30
0.31
0.31
0.32
0.33
0.34
0.35
0.37
0.38
0.39
0.40
0.41
0.42
0.43
0.45
0.46
0.47
0.48
Power Ratings
optibelt SUPER TX M=S Section AX/X13
Nominal Power Rating PN (kW) for β = 180° and Ld = 1730 mm
Statically balanced
v (m/s)
Pulleys
Table 41
nk
Datum diameter of small pulley ddk (mm)
(min-1)
63
71
80
90
95
100
106
112
118
125
132
140
150
160
180
700
950
1450
2850
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
3100
3200
3300
3400
3500
3600
3700
3800
3900
4000
4100
4200
4300
4400
4500
4600
4700
4800
4900
5000
5100
5200
5300
5400
5500
5600
5700
5800
5900
6000
0.67
0.82
1.05
1.39
0.16
0.27
0.37
0.46
0.54
0.61
0.67
0.74
0.79
0.85
0.90
0.94
0.99
1.03
1.07
1.10
1.14
1.17
1.20
1.23
1.25
1.28
1.30
1.32
1.34
1.35
1.37
1.38
1.39
1.40
1.41
1.42
1.43
1.43
1.43
1.44
1.44
1.43
1.43
1.43
1.42
1.42
1.41
1.40
1.39
1.37
1.36
1.34
1.33
1.31
1.29
1.27
1.25
1.22
1.20
1.17
1.14
1.11
1.08
1.05
0.86
1.06
1.39
1.96
0.19
0.34
0.46
0.57
0.68
0.77
0.86
0.94
1.02
1.10
1.17
1.23
1.30
1.36
1.42
1.47
1.52
1.57
1.62
1.66
1.71
1.75
1.78
1.82
1.85
1.89
1.92
1.94
1.97
2.00
2.02
2.04
2.06
2.07
2.09
2.10
2.11
2.12
2.13
2.14
2.14
2.14
2.15
2.14
2.14
2.14
2.13
2.12
2.11
2.10
2.09
2.07
2.05
2.04
2.01
1.99
1.97
1.94
1.91
1.88
1.07
1.33
1.76
2.58
0.23
0.41
0.56
0.70
0.83
0.95
1.07
1.17
1.28
1.37
1.47
1.56
1.64
1.72
1.80
1.87
1.95
2.01
2.08
2.14
2.20
2.26
2.32
2.37
2.42
2.47
2.51
2.55
2.60
2.63
2.67
2.70
2.74
2.76
2.79
2.82
2.84
2.86
2.88
2.89
2.91
2.92
2.93
2.93
2.94
2.94
2.94
2.94
2.93
2.92
2.91
2.90
2.89
2.87
2.85
2.83
2.80
2.78
2.75
2.72
1.29
1.61
2.16
3.23
0.28
0.49
0.67
0.84
1.00
1.15
1.29
1.42
1.55
1.67
1.79
1.90
2.01
2.11
2.21
2.31
2.40
2.49
2.58
2.66
2.74
2.81
2.89
2.96
3.02
3.09
3.15
3.21
3.26
3.31
3.36
3.41
3.45
3.49
3.53
3.57
3.60
3.63
3.65
3.68
3.70
3.72
3.73
3.74
3.75
3.76
3.76
3.76
3.76
3.75
3.74
3.73
3.71
3.69
3.67
3.64
3.61
3.58
3.55
3.51
1.40
1.76
2.36
3.55
0.30
0.52
0.73
0.91
1.08
1.25
1.40
1.55
1.69
1.82
1.95
2.07
2.19
2.31
2.42
2.52
2.63
2.73
2.82
2.91
3.00
3.08
3.16
3.24
3.32
3.39
3.46
3.52
3.58
3.64
3.70
3.75
3.80
3.84
3.88
3.92
3.96
3.99
4.02
4.05
4.07
4.09
4.11
4.12
4.13
4.14
4.14
4.14
4.13
4.13
4.11
4.10
4.08
4.06
4.03
4.00
3.97
3.93
3.89
3.85
1.51
1.90
2.56
3.86
0.32
0.56
0.78
0.98
1.17
1.34
1.51
1.67
1.82
1.97
2.11
2.24
2.37
2.50
2.62
2.74
2.85
2.96
3.06
3.16
3.26
3.35
3.44
3.52
3.60
3.68
3.76
3.83
3.90
3.96
4.02
4.08
4.13
4.18
4.23
4.27
4.31
4.34
4.38
4.40
4.43
4.45
4.47
4.48
4.49
4.49
4.50
4.49
4.49
4.48
4.46
4.45
4.42
4.40
4.37
4.33
4.29
4.25
4.20
4.15
1.64
2.06
2.79
4.23
0.34
0.61
0.84
1.06
1.27
1.46
1.64
1.81
1.98
2.14
2.30
2.44
2.59
2.72
2.86
2.99
3.11
3.23
3.34
3.45
3.56
3.66
3.76
3.85
3.94
4.03
4.11
4.19
4.26
4.33
4.40
4.46
4.52
4.57
4.62
4.67
4.71
4.75
4.78
4.81
4.84
4.86
4.88
4.89
4.90
4.90
4.90
4.89
4.88
4.87
4.85
4.82
4.79
4.76
4.72
4.68
4.63
4.58
4.52
4.45
1.77
2.23
3.02
4.58
0.37
0.65
0.91
1.14
1.36
1.57
1.77
1.96
2.14
2.31
2.48
2.64
2.80
2.95
3.09
3.23
3.37
3.50
3.62
3.74
3.86
3.97
4.07
4.18
4.27
4.37
4.45
4.54
4.62
4.69
4.77
4.83
4.89
4.95
5.00
5.05
5.10
5.14
5.17
5.20
5.22
5.24
5.26
5.27
5.27
5.27
5.27
5.26
5.24
5.22
5.19
5.16
5.12
5.08
5.03
1.90
2.39
3.25
4.92
0.39
0.70
0.97
1.22
1.46
1.68
1.90
2.10
2.30
2.48
2.66
2.84
3.01
3.17
3.32
3.47
3.62
3.76
3.89
4.02
4.15
4.27
4.38
4.49
4.59
4.69
4.79
4.88
4.96
5.04
5.12
5.19
5.25
5.31
5.37
5.42
5.46
5.50
5.53
5.56
5.59
5.60
5.61
5.62
5.62
5.61
5.60
5.59
5.56
5.53
5.50
5.46
5.41
5.35
5.29
2.04
2.58
3.51
5.31
0.42
0.75
1.04
1.32
1.57
1.81
2.04
2.26
2.48
2.68
2.88
3.06
3.25
3.42
3.59
3.75
3.91
4.06
4.21
4.35
4.48
4.61
4.73
4.85
4.96
5.07
5.17
5.26
5.35
5.44
5.52
5.59
5.66
5.72
5.77
5.82
5.87
5.90
5.93
5.96
5.98
5.99
6.00
6.00
5.99
5.97
5.95
5.92
5.89
5.85
2.19
2.76
3.76
5.68
0.45
0.80
1.11
1.41
1.68
1.94
2.19
2.43
2.65
2.87
3.08
3.29
3.48
3.67
3.85
4.03
4.19
4.36
4.51
4.66
4.80
4.94
5.07
5.20
5.32
5.43
5.53
5.63
5.73
5.82
5.90
5.97
6.04
6.10
6.15
6.20
6.24
6.28
6.30
6.32
6.34
6.34
6.34
6.33
6.31
6.29
6.25
6.21
6.16
6.11
2.35
2.97
4.05
6.09
0.48
0.86
1.20
1.51
1.81
2.09
2.35
2.61
2.86
3.09
3.32
3.54
3.75
3.95
4.14
4.33
4.51
4.69
4.85
5.01
5.17
5.31
5.45
5.58
5.71
5.83
5.94
6.04
6.14
6.23
6.31
6.38
6.45
6.51
6.56
6.61
6.64
6.67
6.69
6.70
6.70
6.70
6.68
6.66
6.63
2.56
3.23
4.40
6.57
0.52
0.93
1.30
1.64
1.96
2.27
2.56
2.84
3.10
3.36
3.61
3.84
4.07
4.29
4.50
4.71
4.90
5.09
5.27
5.44
5.60
5.76
5.91
6.05
6.18
6.30
6.42
6.52
6.62
6.71
6.79
6.86
6.93
6.98
7.03
7.06
7.09
7.11
7.11
7.11
7.10
7.07
7.04
7.00
6.94
2.76
3.49
4.74
7.03
0.56
1.00
1.40
1.77
2.11
2.44
2.76
3.06
3.35
3.62
3.89
4.15
4.39
4.63
4.86
5.07
5.28
5.48
5.67
5.86
6.03
6.19
6.35
6.49
6.63
6.75
6.87
6.98
7.07
7.16
7.24
7.30
7.36
7.41
7.44
7.47
7.48
7.48
7.47
7.45
3.15
3.98
5.41
7.84
0.63
1.14
1.59
2.02
2.41
2.79
3.15
3.50
3.82
4.14
4.44
4.73
5.01
5.28
5.53
5.78
6.01
6.23
6.44
6.64
6.83
7.00
7.16
7.31
7.45
7.58
7.69
7.79
7.88
7.95
8.01
8.06
8.09
8.11
8.11
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
0.02
0.03
0.04
0.09
0.00
0.01
0.01
0.01
0.02
0.02
0.02
0.02
0.03
0.03
0.03
0.04
0.04
0.04
0.05
0.05
0.05
0.05
0.06
0.06
0.06
0.07
0.07
0.07
0.08
0.08
0.08
0.09
0.09
0.09
0.09
0.10
0.10
0.10
0.11
0.11
0.11
0.12
0.12
0.12
0.12
0.13
0.13
0.13
0.14
0.14
0.14
0.15
0.15
0.15
0.16
0.16
0.16
0.16
0.17
0.17
0.17
0.18
0.18
0.18
SUPER TX M=S
0.08
0.11
0.17
0.33
0.01
0.02
0.03
0.05
0.06
0.07
0.08
0.09
0.10
0.11
0.13
0.14
0.15
0.16
0.17
0.18
0.20
0.21
0.22
0.23
0.24
0.25
0.26
0.28
0.29
0.30
0.31
0.32
0.33
0.34
0.36
0.37
0.38
0.39
0.40
0.41
0.42
0.44
0.45
0.46
0.47
0.48
0.49
0.51
0.52
0.53
0.54
0.55
0.56
0.57
0.59
0.60
0.61
0.62
0.63
0.64
0.65
0.67
0.68
0.69
power (kW)
speed ratio i
1,27 >1,57
to
1,57
0.12
0.16
0.24
0.47
0.02
0.03
0.05
0.07
0.08
0.10
0.12
0.13
0.15
0.17
0.18
0.20
0.22
0.23
0.25
0.26
0.28
0.30
0.31
0.33
0.35
0.36
0.38
0.40
0.41
0.43
0.45
0.46
0.48
0.50
0.51
0.53
0.55
0.56
0.58
0.60
0.61
0.63
0.65
0.66
0.68
0.70
0.71
0.73
0.74
0.76
0.78
0.79
0.81
0.83
0.84
0.86
0.88
0.89
0.91
0.93
0.94
0.96
0.98
0.99
0.18
0.24
0.37
0.73
0.03
0.05
0.08
0.10
0.13
0.15
0.18
0.21
0.23
0.26
0.28
0.31
0.33
0.36
0.38
0.41
0.44
0.46
0.49
0.51
0.54
0.56
0.59
0.62
0.64
0.67
0.69
0.72
0.74
0.77
0.80
0.82
0.85
0.87
0.90
0.92
0.95
0.98
1.00
1.03
1.05
1.08
1.10
1.13
1.15
1.18
1.21
1.23
1.26
1.28
1.31
1.33
1.36
1.39
1.41
1.44
1.46
1.49
1.51
1.54
Where v > 30 m/s,
please consult our
Applications Engineering
Department
v (m/s)
Dynamically balanced (for details see DIN 2211)
Pulleys
97
Power Ratings
optibelt SUPER TX M=S Section BX/X17
Nominal Power Rating PN (kW) for β = 180° and Ld = 2280 mm
Statically balanced
v (m/s)
Pulleys
Table 42
nk
Datum diameter of small pulley ddk (mm)
(min-1)
90
100
106
112
118
125
132
140
160
180
190
200
212
224
250
280
700
950
1450
2850
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
3100
3200
3300
3400
3500
3600
3700
3800
3900
4000
4100
4200
4300
4400
4500
4600
4700
4800
4900
5000
1.70
2.12
2.82
4.16
0.37
0.64
0.89
1.11
1.32
1.51
1.70
1.87
2.04
2.19
2.35
2.49
2.63
2.76
2.89
3.01
3.13
3.24
3.35
3.45
3.55
3.64
3.73
3.82
3.90
3.98
4.05
4.12
4.19
4.25
4.31
4.36
4.41
4.46
4.50
4.54
4.57
4.60
4.63
4.65
4.67
4.68
4.69
4.70
4.70
4.70
4.69
4.68
4.66
4.64
2.01
2.52
3.39
5.06
0.42
0.75
1.04
1.31
1.56
1.79
2.01
2.22
2.42
2.61
2.80
2.98
3.15
3.31
3.47
3.62
3.76
3.90
4.04
4.17
4.29
4.41
4.53
4.63
4.74
4.84
4.93
5.02
5.11
5.19
5.26
5.33
5.39
5.45
5.51
5.56
5.60
5.64
5.68
5.71
5.73
5.75
5.77
5.78
5.78
5.78
5.77
5.76
5.74
5.72
2.20
2.76
3.72
5.59
0.46
0.82
1.13
1.42
1.70
1.95
2.20
2.43
2.65
2.86
3.07
3.26
3.45
3.63
3.81
3.98
4.14
4.30
4.45
4.59
4.73
4.86
4.99
5.11
5.23
5.34
5.44
5.54
5.64
5.73
5.81
5.89
5.96
6.03
6.09
6.14
6.19
6.24
6.27
6.31
6.33
6.35
6.37
6.38
6.38
6.37
6.36
6.35
6.32
6.29
2.38
2.99
4.05
6.10
0.49
0.88
1.22
1.54
1.83
2.11
2.38
2.63
2.87
3.11
3.33
3.55
3.75
3.95
4.14
4.33
4.51
4.68
4.85
5.00
5.16
5.30
5.44
5.58
5.70
5.83
5.94
6.05
6.15
6.25
6.34
6.43
6.50
6.58
6.64
6.70
6.75
6.80
6.84
6.87
6.90
6.92
6.93
6.94
6.93
6.93
6.91
6.89
6.86
6.82
2.56
3.23
4.37
6.60
0.53
0.94
1.31
1.65
1.97
2.27
2.56
2.84
3.10
3.35
3.59
3.83
4.05
4.27
4.48
4.68
4.87
5.06
5.24
5.41
5.58
5.73
5.89
6.03
6.17
6.30
6.43
6.54
6.65
6.76
6.86
6.95
7.03
7.11
7.17
7.24
7.29
7.34
7.38
7.41
7.43
7.45
7.46
7.46
7.45
7.44
7.41
7.38
7.34
7.29
2.77
3.49
4.75
7.16
0.57
1.01
1.41
1.78
2.13
2.46
2.77
3.07
3.36
3.63
3.89
4.15
4.39
4.63
4.86
5.08
5.29
5.49
5.69
5.88
6.06
6.23
6.39
6.55
6.70
6.84
6.98
7.10
7.22
7.33
7.43
7.53
7.62
7.70
7.77
7.83
7.88
7.93
7.96
7.99
8.01
8.02
8.02
8.02
8.00
7.97
7.94
7.89
7.84
7.77
2.98
3.76
5.11
7.70
0.61
1.09
1.52
1.91
2.29
2.64
2.98
3.30
3.61
3.91
4.19
4.47
4.73
4.99
5.23
5.47
5.70
5.92
6.13
6.33
6.53
6.71
6.89
7.06
7.21
7.37
7.51
7.64
7.77
7.88
7.99
8.09
8.18
8.26
8.33
8.39
8.44
8.48
8.51
8.53
8.54
8.55
8.54
8.52
8.49
8.45
8.39
8.33
8.26
8.17
3.21
4.06
5.53
8.30
0.65
1.17
1.63
2.06
2.47
2.85
3.21
3.56
3.90
4.22
4.53
4.83
5.11
5.39
5.66
5.91
6.16
6.40
6.62
6.84
7.05
7.25
7.44
7.62
7.78
7.94
8.09
8.23
8.36
8.48
8.59
8.69
8.78
8.86
8.93
8.98
9.03
9.06
9.08
9.09
9.09
9.08
9.06
9.02
8.97
3.79
4.79
6.53
9.67
0.76
1.37
1.92
2.43
2.90
3.36
3.79
4.20
4.60
4.98
5.35
5.70
6.04
6.37
6.68
6.98
7.27
7.55
7.81
8.06
8.30
8.52
8.74
8.94
9.12
9.30
9.46
9.60
9.73
9.85
9.96
10.05
10.13
10.19
10.23
10.26
10.28
10.28
10.26
10.23
10.18
10.11
10.02
9.92
9.80
4.35
5.51
7.49
10.86
0.87
1.57
2.20
2.78
3.33
3.85
4.35
4.83
5.29
5.72
6.14
6.55
6.94
7.31
7.66
8.00
8.32
8.63
8.92
9.20
9.46
9.70
9.93
10.14
10.33
10.51
10.66
10.80
10.92
11.03
11.11
11.17
11.22
11.24
11.24
11.23
11.19
11.13
11.05
10.94
4.63
5.86
7.95
11.39
0.93
1.67
2.34
2.96
3.54
4.10
4.63
5.14
5.62
6.09
6.53
6.96
7.37
7.76
8.14
8.49
8.83
9.15
9.45
9.74
10.01
10.25
10.48
10.69
10.88
11.06
11.21
11.34
11.44
11.53
11.60
11.64
11.66
11.66
11.63
4.90
6.20
8.40
11.87
0.98
1.76
2.47
3.13
3.75
4.34
4.90
5.44
5.95
6.44
6.91
7.36
7.80
8.21
8.60
8.97
9.32
9.65
9.97
10.26
10.53
10.78
11.01
11.22
11.40
11.57
11.71
11.82
11.92
11.99
12.03
12.05
12.04
12.00
11.94
5.23
6.61
8.94
12.39
1.04
1.88
2.63
3.34
4.00
4.63
5.23
5.80
6.34
6.86
7.36
7.84
8.29
8.73
9.14
9.53
9.89
10.24
10.56
10.86
11.13
11.38
11.61
11.81
11.98
12.13
12.25
12.35
12.42
12.45
5.55
7.01
9.45
12.82
1.11
1.99
2.80
3.54
4.24
4.91
5.55
6.15
6.73
7.28
7.80
8.31
8.78
9.23
9.66
10.07
10.44
10.80
11.12
11.42
11.69
11.94
12.16
12.35
12.51
12.64
12.73
12.80
12.84
12.84
6.22
7.85
10.52
13.51
1.24
2.24
3.14
3.98
4.77
5.51
6.22
6.90
7.54
8.15
8.73
9.28
9.80
10.29
10.74
11.17
11.56
11.92
12.25
12.54
12.80
13.02
13.20
13.35
13.46
13.52
13.55
13.53
13.47
13.37
6.98
8.78
11.66
13.82
1.40
2.52
3.53
4.47
5.36
6.19
6.98
7.73
8.44
9.12
9.75
10.34
10.90
11.42
11.90
12.33
12.73
13.08
13.38
13.64
13.86
14.02
14.14
14.20
14.21
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
0.03
0.04
0.07
0.13
0.00
0.01
0.01
0.02
0.02
0.03
0.03
0.04
0.04
0.05
0.05
0.06
0.06
0.07
0.07
0.07
0.08
0.08
0.09
0.09
0.10
0.10
0.11
0.11
0.12
0.12
0.13
0.13
0.14
0.14
0.15
0.15
0.15
0.16
0.16
0.17
0.17
0.18
0.18
0.19
0.19
0.20
0.20
0.21
0.21
0.22
0.22
0.22
0.23
0.23
SUPER TX M=S
power (kW)
speed ratio i
1,27 >1,57
to
1,57
0.12 0.18
0.17 0.24
0.26 0.37
0.50 0.72
0.02 0.03
0.04 0.05
0.05 0.08
0.07 0.10
0.09 0.13
0.11 0.15
0.12 0.18
0.14 0.20
0.16 0.23
0.18 0.25
0.19 0.28
0.21 0.31
0.23 0.33
0.25 0.36
0.26 0.38
0.28 0.41
0.30 0.43
0.32 0.46
0.33 0.48
0.35 0.51
0.37 0.53
0.39 0.56
0.41 0.58
0.42 0.61
0.44 0.64
0.46 0.66
0.48 0.69
0.49 0.71
0.51 0.74
0.53 0.76
0.55 0.79
0.56 0.81
0.58 0.84
0.60 0.86
0.62 0.89
0.63 0.92
0.65 0.94
0.67 0.97
0.69 0.99
0.71 1.02
0.72 1.04
0.74 1.07
0.76 1.09
0.78 1.12
0.79 1.14
0.81 1.17
0.83 1.19
0.85 1.22
0.86 1.25
0.88 1.27
Where v > 30 m/s,
please consult our
Applications Engineering
Department
v (m/s)
Dynamically balanced (for details see DIN 2211)
98
Pulleys
0.28
0.37
0.57
1.12
0.04
0.08
0.12
0.16
0.20
0.24
0.28
0.32
0.35
0.39
0.43
0.47
0.51
0.55
0.59
0.63
0.67
0.71
0.75
0.79
0.83
0.87
0.91
0.95
0.99
1.02
1.06
1.10
1.14
1.18
1.22
1.26
1.30
1.34
1.38
1.42
1.46
1.50
1.54
1.58
1.62
1.65
1.69
1.73
1.77
1.81
1.85
1.89
1.93
1.97
Power Ratings
optibelt SUPER TX M=S Section CX/X22
Nominal Power Rating PN (kW) for β = 180° and Ld = 3808 mm
Statically balanced
v (m/s)
Pulleys
Table 43
nk
Datum diameter of small pulley ddk (mm)
(min-1)
140
150
160
180
200
224
250
280
315
700
950
1450
2850
50
100
150
200
250
300
350
400
450
500
550
600
650
700
750
800
850
900
950
1000
1050
1100
1150
1200
1250
1300
1350
1400
1450
1500
1550
1600
1650
1700
1750
1800
1850
1900
1950
2000
2050
2100
2150
2200
2250
2300
2350
2400
2450
2500
2550
2600
2650
2700
2750
2800
2850
2900
2950
3000
3050
3100
3150
3200
3250
3300
3350
3400
3450
3500
4.81
6.07
8.23
12.16
0.54
0.98
1.38
1.76
2.11
2.45
2.78
3.10
3.40
3.70
3.99
4.27
4.55
4.81
5.08
5.33
5.58
5.83
6.07
6.31
6.54
6.77
6.99
7.21
7.42
7.63
7.83
8.04
8.23
8.43
8.61
8.80
8.98
9.16
9.33
9.50
9.67
9.83
9.99
10.14
10.29
10.44
10.58
10.72
10.85
10.98
11.11
11.23
11.35
11.47
11.58
11.68
11.79
11.89
11.98
12.07
12.16
12.24
12.32
12.39
12.46
12.53
12.59
12.65
12.70
12.75
12.79
12.83
12.87
12.90
5.29
6.68
9.07
13.34
0.59
1.07
1.51
1.92
2.31
2.69
3.05
3.39
3.73
4.06
4.38
4.69
4.99
5.29
5.58
5.86
6.14
6.42
6.68
6.94
7.20
7.45
7.70
7.94
8.17
8.40
8.63
8.85
9.07
9.28
9.49
9.70
9.90
10.09
10.28
10.47
10.65
10.83
11.00
11.17
11.33
11.49
11.65
11.80
11.95
12.09
12.22
12.36
12.48
12.61
12.73
12.84
12.95
13.05
13.15
13.25
13.34
13.42
13.50
13.58
13.65
13.71
13.77
13.83
13.88
13.92
13.96
14.00
14.03
14.05
5.76
7.28
9.89
14.45
0.64
1.16
1.64
2.08
2.51
2.92
3.31
3.69
4.06
4.42
4.76
5.10
5.44
5.76
6.08
6.39
6.69
6.99
7.28
7.57
7.85
8.12
8.39
8.66
8.91
9.17
9.41
9.66
9.89
10.12
10.35
10.57
10.79
11.00
11.21
11.41
11.61
11.80
11.99
12.17
12.34
12.52
12.68
12.84
13.00
13.15
13.29
13.43
13.57
13.70
13.82
13.94
14.05
14.16
14.26
14.36
14.45
14.53
14.61
14.68
14.75
14.81
14.87
14.92
14.96
15.00
15.03
15.05
15.07
15.08
6.69
8.46
11.49
16.45
0.74
1.34
1.89
2.41
2.90
3.37
3.83
4.27
4.70
5.12
5.52
5.92
6.31
6.69
7.06
7.42
7.77
8.12
8.46
8.79
9.12
9.44
9.75
10.06
10.35
10.65
10.93
11.21
11.49
11.75
12.01
12.27
12.51
12.76
12.99
13.22
13.44
13.66
13.87
14.07
14.26
14.45
14.64
14.81
14.98
15.14
15.30
15.44
15.58
15.72
15.84
15.96
16.08
16.18
16.28
16.37
16.45
16.52
16.59
16.65
16.70
16.74
16.77
16.80
16.82
16.83
16.83
16.82
16.81
16.78
7.59
9.61
13.01
18.14
0.83
1.51
2.14
2.72
3.28
3.82
4.34
4.84
5.33
5.81
6.27
6.72
7.16
7.59
8.01
8.42
8.83
9.22
9.61
9.98
10.35
10.71
11.06
11.41
11.75
12.07
12.39
12.71
13.01
13.31
13.60
13.88
14.15
14.42
14.68
14.92
15.16
15.40
15.62
15.84
16.04
16.24
16.43
16.62
16.79
16.95
17.11
17.25
17.39
17.52
17.63
17.74
17.84
17.93
18.01
18.08
18.14
18.19
18.23
18.26
18.27
18.28
18.28
18.26
18.24
8.65
10.94
14.76
19.73
0.94
1.72
2.43
3.10
3.74
4.35
4.94
5.52
6.08
6.62
7.15
7.66
8.16
8.65
9.13
9.60
10.06
10.50
10.94
11.37
11.78
12.19
12.59
12.97
13.35
13.72
14.07
14.42
14.76
15.08
15.40
15.71
16.00
16.29
16.56
16.83
17.08
17.33
17.56
17.78
17.99
18.19
18.38
18.56
18.72
18.87
19.01
19.14
19.26
19.36
19.45
19.53
19.60
19.65
19.69
19.72
19.73
19.73
19.72
19.69
9.77
12.34
16.54
20.88
1.06
1.94
2.74
3.50
4.22
4.91
5.59
6.23
6.86
7.48
8.07
8.65
9.22
9.77
10.31
10.84
11.35
11.85
12.34
12.82
13.28
13.73
14.17
14.59
15.01
15.41
15.80
16.17
16.54
16.89
17.22
17.55
17.86
18.16
18.44
18.71
18.97
19.21
19.44
19.66
19.86
20.04
20.21
20.36
20.50
20.63
20.73
20.82
20.90
20.96
21.00
21.02
21.03
21.02
20.99
11.03
13.89
18.44
21.39
1.20
2.19
3.09
3.95
4.77
5.55
6.31
7.05
7.76
8.45
9.12
9.77
10.41
11.03
11.64
12.22
12.80
13.35
13.89
14.42
14.93
15.42
15.90
16.37
16.81
17.25
17.66
18.06
18.44
18.81
19.16
19.49
19.81
20.11
20.38
20.65
20.89
21.11
21.32
21.50
21.67
21.81
21.94
22.05
22.13
22.19
22.23
22.25
22.25
22.23
12.45
15.62
20.47
20.80
1.35
2.47
3.50
4.47
5.40
6.29
7.14
7.97
8.77
9.55
10.31
11.04
11.76
12.45
13.13
13.78
14.41
15.03
15.62
16.20
16.76
17.29
17.81
18.30
18.78
19.23
19.67
20.08
20.47
20.83
21.18
21.50
21.80
22.07
22.33
22.55
22.75
22.93
23.08
23.20
23.30
23.37
23.41
23.42
23.40
335
355
400
450
500
630
13.24 14.02 15.70 17.48 19.17 23.07
16.58 17.50 19.46 21.47 23.28 26.99
21.52 22.50 24.39 25.99 27.00 26.57
1.44
2.63
3.73
4.76
5.75
6.70
7.61
8.49
9.34
10.17
10.97
11.75
12.51
13.24
13.95
14.64
15.31
15.95
16.58
17.17
17.75
18.31
18.84
19.35
19.83
20.29
20.73
21.14
21.52
21.88
22.21
22.52
22.80
23.05
23.27
23.46
23.63
23.76
23.86
23.93
1.53
2.79
3.96
5.06
6.10
7.10
8.07
9.00
9.91
10.78
11.63
12.45
13.25
14.02
14.76
15.48
16.18
16.85
17.50
18.12
18.71
19.28
19.82
20.34
20.83
21.29
21.72
22.12
22.50
22.84
23.15
23.43
23.68
23.90
24.09
1.72
3.15
4.46
5.70
6.88
8.00
9.09
10.14
11.15
12.12
13.07
13.98
14.86
15.70
16.52
17.30
18.06
18.78
19.46
20.12
20.74
21.32
21.87
22.39
22.87
23.31
23.71
24.07
24.39
24.67
24.91
25.11
25.27
25.37
25.44
1.94
3.54
5.01
6.40
7.72
8.98
10.19
11.36
12.48
13.56
14.60
15.60
16.56
17.48
18.36
19.20
20.00
20.76
21.47
22.14
22.76
23.34
23.87
24.35
24.78
25.16
25.49
25.77
25.99
26.15
2.15
3.93
5.56
7.09
8.55
9.94
11.27
12.55
13.78
14.95
16.08
17.16
18.19
19.17
20.10
20.97
21.80
22.57
23.28
23.94
24.53
25.07
25.55
25.96
26.31
2.69
4.90
6.93
8.83
10.62
12.33
13.95
15.49
16.96
18.34
19.65
20.87
22.02
23.07
24.04
24.93
25.71
26.40
26.99
27.48
27.86
28.13
28.28
28.31
28.23
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
0.06 0.23
0.08 0.32
0.13 0.48
0.25 0.95
0.00 0.02
0.01 0.03
0.01 0.05
0.02 0.07
0.02 0.08
0.03 0.10
0.03 0.12
0.04 0.13
0.04 0.15
0.04 0.17
0.05 0.18
0.05 0.20
0.06 0.22
0.06 0.23
0.07 0.25
0.07 0.27
0.07 0.28
0.08 0.30
0.08 0.32
0.09 0.33
0.09 0.35
0.10 0.36
0.10 0.38
0.11 0.40
0.11 0.41
0.11 0.43
0.12 0.45
0.12 0.46
0.13 0.48
0.13 0.50
0.14 0.51
0.14 0.53
0.15 0.55
0.15 0.56
0.15 0.58
0.16 0.60
0.16 0.61
0.17 0.63
0.17 0.65
0.18 0.66
0.18 0.68
0.18 0.70
0.19 0.71
0.19 0.73
0.20 0.75
0.20 0.76
0.21 0.78
0.21 0.80
0.22 0.81
0.22 0.83
0.22 0.85
0.23 0.86
0.23 0.88
0.24 0.90
0.24 0.91
0.25 0.93
0.25 0.95
0.26 0.96
0.26 0.98
0.26 0.99
0.27 1.01
0.27 1.03
0.28 1.04
0.28 1.06
0.29 1.08
0.29 1.09
0.29 1.11
0.30 1.13
0.30 1.14
0.31 1.16
SUPER TX M=S
Where v > 30 m/s,
please consult our
Applications Engineering
Department
power (kW)
speed ratio i
1,27 >1,57
to
1,57
0.33
0.45
0.69
1.36
0.02
0.05
0.07
0.10
0.12
0.14
0.17
0.19
0.22
0.24
0.26
0.29
0.31
0.33
0.36
0.38
0.41
0.43
0.45
0.48
0.50
0.53
0.55
0.57
0.60
0.62
0.65
0.67
0.69
0.72
0.74
0.77
0.79
0.81
0.84
0.86
0.88
0.91
0.93
0.96
0.98
1.00
1.03
1.05
1.08
1.10
1.12
1.15
1.17
1.20
1.22
1.24
1.27
1.29
1.32
1.34
1.36
1.39
1.41
1.43
1.46
1.48
1.51
1.53
1.55
1.58
1.60
1.63
1.65
1.67
0.52
0.70
1.07
2.11
0.04
0.07
0.11
0.15
0.19
0.22
0.26
0.30
0.33
0.37
0.41
0.44
0.48
0.52
0.56
0.59
0.63
0.67
0.70
0.74
0.78
0.82
0.85
0.89
0.93
0.96
1.00
1.04
1.07
1.11
1.15
1.19
1.22
1.26
1.30
1.33
1.37
1.41
1.45
1.48
1.52
1.56
1.59
1.63
1.67
1.70
1.74
1.78
1.82
1.85
1.89
1.93
1.96
2.00
2.04
2.08
2.11
2.15
2.19
2.22
2.26
2.30
2.33
2.37
2.41
2.45
2.48
2.52
2.56
2.59
v (m/s)
Dynamically balanced (for details see DIN 2211)
Pulleys
99
Power Ratings
Section 5 – raw edge – moulded cogged
Nominal Power Rating PN (kW) for β = 180° and Ld = 312 mm
Statically balanced
v (m/s)
Pulleys
Table 44
nk
Datum diameter of small pulley ddk (mm)
(min-1)
16
18
20
22.4
25
28
31.5
33.5
40
45
700
950
1450
2850
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
3100
3200
3300
3400
3500
3600
3700
3800
3900
4000
4100
4200
4300
4400
4500
4600
4700
4800
4900
5000
5100
5200
5300
5400
5500
5600
5700
5800
5900
6000
0.02
0.02
0.03
0.06
0.01
0.01
0.01
0.01
0.02
0.02
0.02
0.02
0.03
0.03
0.03
0.03
0.03
0.03
0.04
0.04
0.04
0.04
0.04
0.05
0.05
0.05
0.05
0.05
0.05
0.06
0.06
0.06
0.06
0.06
0.06
0.06
0.07
0.07
0.07
0.07
0.07
0.07
0.07
0.08
0.08
0.08
0.08
0.08
0.08
0.08
0.09
0.09
0.09
0.09
0.09
0.09
0.09
0.10
0.10
0.10
0.10
0.10
0.10
0.02
0.03
0.04
0.07
0.01
0.01
0.01
0.02
0.02
0.02
0.03
0.03
0.03
0.03
0.04
0.04
0.04
0.04
0.05
0.05
0.05
0.05
0.06
0.06
0.06
0.06
0.06
0.07
0.07
0.07
0.07
0.07
0.08
0.08
0.08
0.08
0.08
0.09
0.09
0.09
0.09
0.09
0.10
0.10
0.10
0.10
0.10
0.11
0.11
0.11
0.11
0.11
0.12
0.12
0.12
0.12
0.12
0.12
0.13
0.13
0.13
0.13
0.13
0.03
0.04
0.05
0.09
0.01
0.01
0.02
0.02
0.02
0.03
0.03
0.03
0.04
0.04
0.04
0.05
0.05
0.05
0.06
0.06
0.06
0.06
0.07
0.07
0.07
0.07
0.08
0.08
0.08
0.09
0.09
0.09
0.09
0.10
0.10
0.10
0.10
0.11
0.11
0.11
0.11
0.12
0.12
0.12
0.12
0.13
0.13
0.13
0.13
0.13
0.14
0.14
0.14
0.14
0.15
0.15
0.15
0.15
0.16
0.16
0.16
0.16
0.16
0.03
0.04
0.06
0.11
0.01
0.02
0.02
0.02
0.03
0.03
0.04
0.04
0.04
0.05
0.05
0.06
0.06
0.06
0.07
0.07
0.07
0.08
0.08
0.08
0.09
0.09
0.09
0.10
0.10
0.10
0.11
0.11
0.11
0.12
0.12
0.12
0.13
0.13
0.13
0.13
0.14
0.14
0.14
0.15
0.15
0.15
0.16
0.16
0.16
0.16
0.17
0.17
0.17
0.18
0.18
0.18
0.18
0.19
0.19
0.19
0.19
0.20
0.20
0.04
0.05
0.07
0.13
0.01
0.02
0.02
0.03
0.03
0.04
0.04
0.05
0.05
0.06
0.06
0.07
0.07
0.07
0.08
0.08
0.09
0.09
0.09
0.10
0.10
0.11
0.11
0.11
0.12
0.12
0.13
0.13
0.13
0.14
0.14
0.14
0.15
0.15
0.16
0.16
0.16
0.17
0.17
0.17
0.18
0.18
0.18
0.19
0.19
0.20
0.20
0.20
0.21
0.21
0.21
0.22
0.22
0.22
0.23
0.23
0.23
0.24
0.24
0.04
0.06
0.08
0.15
0.02
0.02
0.03
0.03
0.04
0.04
0.05
0.06
0.06
0.07
0.07
0.08
0.08
0.09
0.09
0.10
0.10
0.11
0.11
0.12
0.12
0.13
0.13
0.13
0.14
0.14
0.15
0.15
0.16
0.16
0.17
0.17
0.18
0.18
0.18
0.19
0.19
0.20
0.20
0.21
0.21
0.21
0.22
0.22
0.23
0.23
0.24
0.24
0.24
0.25
0.25
0.26
0.26
0.26
0.27
0.27
0.28
0.28
0.28
0.05
0.07
0.10
0.18
0.02
0.02
0.03
0.04
0.05
0.05
0.06
0.06
0.07
0.08
0.08
0.09
0.10
0.10
0.11
0.11
0.12
0.12
0.13
0.14
0.14
0.15
0.15
0.16
0.16
0.17
0.17
0.18
0.19
0.19
0.20
0.20
0.21
0.21
0.22
0.22
0.23
0.23
0.24
0.24
0.25
0.25
0.26
0.26
0.27
0.27
0.28
0.28
0.29
0.29
0.30
0.30
0.31
0.31
0.32
0.32
0.33
0.33
0.34
0.06
0.07
0.11
0.19
0.02
0.03
0.03
0.04
0.05
0.06
0.06
0.07
0.08
0.08
0.09
0.10
0.10
0.11
0.12
0.12
0.13
0.13
0.14
0.15
0.15
0.16
0.17
0.17
0.18
0.18
0.19
0.19
0.20
0.21
0.21
0.22
0.22
0.23
0.24
0.24
0.25
0.25
0.26
0.26
0.27
0.27
0.28
0.28
0.29
0.30
0.30
0.31
0.31
0.32
0.32
0.33
0.33
0.34
0.34
0.35
0.35
0.36
0.36
0.07
0.09
0.13
0.24
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.10
0.10
0.11
0.12
0.13
0.14
0.14
0.15
0.16
0.17
0.18
0.18
0.19
0.20
0.21
0.21
0.22
0.23
0.24
0.24
0.25
0.26
0.27
0.27
0.28
0.29
0.29
0.30
0.31
0.32
0.32
0.33
0.34
0.34
0.35
0.36
0.36
0.37
0.38
0.38
0.39
0.40
0.40
0.41
0.42
0.42
0.43
0.44
0.44
0.45
0.46
0.08
0.10
0.15
0.28
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.10
0.11
0.12
0.13
0.14
0.15
0.16
0.17
0.18
0.18
0.19
0.20
0.21
0.22
0.23
0.24
0.25
0.25
0.26
0.27
0.28
0.29
0.30
0.31
0.31
0.32
0.33
0.34
0.35
0.36
0.36
0.37
0.38
0.39
0.40
0.40
0.41
0.42
0.43
0.44
0.44
0.45
0.46
0.47
0.47
0.48
0.49
0.50
0.50
0.51
0.52
0.53
VB
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
0.000
0.000
0.001
0.001
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.001
0.001
0.001
0.001
0.001
0.001
0.001
0.001
0.001
0.001
0.001
0.001
0.001
0.001
0.001
0.001
0.001
0.001
0.001
0.001
0.001
0.001
0.002
0.002
0.002
0.002
0.002
0.002
0.002
0.002
0.002
0.002
0.002
0.002
0.002
0.002
0.002
0.002
0.002
0.002
0.002
0.002
0.002
0.002
0.002
0.003
0.003
0.003
0.003
power (kW)
speed ratio i
1,27 >1,57
to
1,57
0.001
0.002
0.002
0.005
0.000
0.001
0.001
0.001
0.001
0.001
0.001
0.002
0.002
0.002
0.002
0.002
0.002
0.003
0.003
0.003
0.003
0.003
0.003
0.004
0.004
0.004
0.004
0.004
0.004
0.005
0.005
0.005
0.005
0.005
0.005
0.006
0.006
0.006
0.006
0.006
0.006
0.007
0.007
0.007
0.007
0.007
0.007
0.008
0.008
0.008
0.008
0.008
0.008
0.009
0.009
0.009
0.009
0.009
0.009
0.010
0.010
0.010
0.010
0.002
0.002
0.004
0.007
0.000
0.001
0.001
0.001
0.001
0.002
0.002
0.002
0.002
0.003
0.003
0.003
0.003
0.004
0.004
0.004
0.004
0.005
0.005
0.005
0.005
0.006
0.006
0.006
0.006
0.007
0.007
0.007
0.007
0.007
0.008
0.008
0.008
0.008
0.009
0.009
0.009
0.009
0.010
0.010
0.010
0.010
0.011
0.011
0.011
0.011
0.012
0.012
0.012
0.012
0.013
0.013
0.013
0.013
0.014
0.014
0.014
0.014
0.015
v (m/s)
Statically balanced
100
Pulleys
0.003
0.004
0.005
0.011
0.001
0.001
0.001
0.002
0.002
0.003
0.003
0.003
0.004
0.004
0.004
0.005
0.005
0.006
0.006
0.006
0.007
0.007
0.007
0.008
0.008
0.009
0.009
0.009
0.010
0.010
0.010
0.011
0.011
0.012
0.012
0.012
0.013
0.013
0.013
0.014
0.014
0.015
0.015
0.015
0.016
0.016
0.016
0.017
0.017
0.018
0.018
0.018
0.019
0.019
0.019
0.020
0.020
0.021
0.021
0.021
0.022
0.022
0.022
Power Ratings
Section Y/6 – raw edge – moulded cogged
Nominal Power Rating PN (kW) for β = 180° and Ld = 315 mm
Statically balanced
v (m/s)
Pulleys
Table 45
nk
Datum diameter of small pulley ddk (mm)
(min-1)
20
22.4
25
28
31.5
35.5
40
45
50
56
700
950
1450
2850
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
3100
3200
3300
3400
3500
3600
3700
3800
3900
4000
4100
4200
4300
4400
4500
4600
4700
4800
4900
5000
5100
5200
5300
5400
5500
5600
5700
5800
5900
6000
0.03
0.03
0.05
0.08
0.01
0.01
0.02
0.02
0.02
0.03
0.03
0.03
0.03
0.04
0.04
0.04
0.04
0.05
0.05
0.05
0.05
0.06
0.06
0.06
0.06
0.07
0.07
0.07
0.07
0.08
0.08
0.08
0.08
0.09
0.09
0.09
0.09
0.09
0.10
0.10
0.10
0.10
0.10
0.11
0.11
0.11
0.11
0.11
0.12
0.12
0.12
0.12
0.12
0.12
0.13
0.13
0.13
0.13
0.13
0.14
0.14
0.14
0.14
0.03
0.04
0.06
0.11
0.01
0.02
0.02
0.02
0.03
0.03
0.04
0.04
0.04
0.05
0.05
0.06
0.06
0.06
0.07
0.07
0.07
0.08
0.08
0.08
0.09
0.09
0.09
0.10
0.10
0.10
0.11
0.11
0.11
0.12
0.12
0.12
0.13
0.13
0.13
0.14
0.14
0.14
0.14
0.15
0.15
0.15
0.16
0.16
0.16
0.16
0.17
0.17
0.17
0.17
0.18
0.18
0.18
0.19
0.19
0.19
0.19
0.20
0.20
0.04
0.05
0.08
0.14
0.01
0.02
0.03
0.03
0.04
0.04
0.05
0.05
0.06
0.06
0.07
0.07
0.08
0.08
0.09
0.09
0.09
0.10
0.10
0.11
0.11
0.12
0.12
0.13
0.13
0.13
0.14
0.14
0.15
0.15
0.16
0.16
0.16
0.17
0.17
0.18
0.18
0.18
0.19
0.19
0.19
0.20
0.20
0.21
0.21
0.21
0.22
0.22
0.22
0.23
0.23
0.24
0.24
0.24
0.25
0.25
0.25
0.26
0.26
0.05
0.07
0.10
0.18
0.02
0.02
0.03
0.04
0.04
0.05
0.06
0.06
0.07
0.08
0.08
0.09
0.09
0.10
0.11
0.11
0.12
0.12
0.13
0.14
0.14
0.15
0.15
0.16
0.16
0.17
0.17
0.18
0.18
0.19
0.20
0.20
0.21
0.21
0.22
0.22
0.23
0.23
0.24
0.24
0.25
0.25
0.26
0.26
0.27
0.27
0.28
0.28
0.28
0.29
0.29
0.30
0.30
0.31
0.31
0.32
0.32
0.33
0.33
0.06
0.08
0.12
0.22
0.02
0.03
0.04
0.05
0.05
0.06
0.07
0.08
0.09
0.09
0.10
0.11
0.12
0.12
0.13
0.14
0.15
0.15
0.16
0.17
0.17
0.18
0.19
0.19
0.20
0.21
0.22
0.22
0.23
0.24
0.24
0.25
0.25
0.26
0.27
0.27
0.28
0.29
0.29
0.30
0.31
0.31
0.32
0.32
0.33
0.34
0.34
0.35
0.35
0.36
0.36
0.37
0.38
0.38
0.39
0.39
0.40
0.40
0.41
0.08
0.10
0.15
0.27
0.02
0.03
0.05
0.06
0.07
0.08
0.08
0.09
0.10
0.11
0.12
0.13
0.14
0.15
0.16
0.17
0.18
0.19
0.19
0.20
0.21
0.22
0.23
0.24
0.24
0.25
0.26
0.27
0.28
0.29
0.29
0.30
0.31
0.32
0.33
0.33
0.34
0.35
0.36
0.36
0.37
0.38
0.39
0.39
0.40
0.41
0.42
0.42
0.43
0.44
0.44
0.45
0.46
0.47
0.47
0.48
0.49
0.49
0.50
0.09
0.12
0.17
0.32
0.03
0.04
0.05
0.07
0.08
0.09
0.10
0.11
0.12
0.14
0.15
0.16
0.17
0.18
0.19
0.20
0.21
0.22
0.23
0.24
0.25
0.26
0.27
0.28
0.29
0.30
0.31
0.32
0.33
0.34
0.35
0.36
0.37
0.38
0.39
0.40
0.41
0.42
0.43
0.44
0.44
0.45
0.46
0.47
0.48
0.49
0.50
0.51
0.51
0.52
0.53
0.54
0.55
0.56
0.56
0.57
0.58
0.59
0.60
0.11
0.14
0.20
0.38
0.03
0.05
0.06
0.08
0.09
0.11
0.12
0.13
0.15
0.16
0.17
0.19
0.20
0.21
0.22
0.24
0.25
0.26
0.27
0.29
0.30
0.31
0.32
0.33
0.35
0.36
0.37
0.38
0.39
0.40
0.42
0.43
0.44
0.45
0.46
0.47
0.48
0.49
0.50
0.51
0.52
0.54
0.55
0.56
0.57
0.58
0.59
0.60
0.61
0.62
0.63
0.64
0.65
0.65
0.66
0.67
0.68
0.69
0.70
0.12
0.16
0.24
0.43
0.04
0.06
0.07
0.09
0.10
0.12
0.14
0.15
0.17
0.18
0.20
0.21
0.23
0.24
0.26
0.27
0.29
0.30
0.32
0.33
0.34
0.36
0.37
0.38
0.40
0.41
0.43
0.44
0.45
0.47
0.48
0.49
0.50
0.52
0.53
0.54
0.55
0.57
0.58
0.59
0.60
0.61
0.63
0.64
0.65
0.66
0.67
0.68
0.70
0.71
0.72
0.73
0.74
0.75
0.76
0.77
0.78
0.79
0.80
0.14
0.18
0.27
0.50
0.04
0.06
0.08
0.10
0.12
0.14
0.16
0.18
0.19
0.21
0.23
0.25
0.26
0.28
0.30
0.31
0.33
0.35
0.36
0.38
0.40
0.41
0.43
0.44
0.46
0.48
0.49
0.51
0.52
0.54
0.55
0.57
0.58
0.60
0.61
0.62
0.64
0.65
0.67
0.68
0.69
0.71
0.72
0.73
0.75
0.76
0.77
0.79
0.80
0.81
0.82
0.84
0.85
0.86
0.87
0.88
0.89
0.90
0.91
VB
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
0.001
0.001
0.002
0.004
0.000
0.000
0.001
0.001
0.001
0.001
0.001
0.001
0.001
0.001
0.002
0.002
0.002
0.002
0.002
0.002
0.002
0.003
0.003
0.003
0.003
0.003
0.003
0.003
0.003
0.004
0.004
0.004
0.004
0.004
0.004
0.004
0.004
0.005
0.005
0.005
0.005
0.005
0.005
0.005
0.006
0.006
0.006
0.006
0.006
0.006
0.006
0.006
0.007
0.007
0.007
0.007
0.007
0.007
0.007
0.008
0.008
0.008
0.008
power (kW)
speed ratio i
1,27 >1,57
to
1,57
0.003
0.005
0.007
0.014
0.001
0.001
0.002
0.002
0.003
0.003
0.004
0.004
0.005
0.005
0.006
0.006
0.007
0.007
0.008
0.008
0.009
0.009
0.010
0.010
0.011
0.011
0.012
0.012
0.013
0.013
0.014
0.014
0.015
0.015
0.016
0.016
0.017
0.017
0.018
0.018
0.019
0.019
0.020
0.020
0.021
0.021
0.022
0.022
0.023
0.023
0.024
0.024
0.025
0.025
0.026
0.026
0.027
0.027
0.028
0.028
0.029
0.029
0.030
0.005
0.007
0.010
0.020
0.001
0.002
0.003
0.004
0.004
0.005
0.006
0.006
0.007
0.008
0.009
0.009
0.010
0.011
0.011
0.012
0.013
0.014
0.014
0.015
0.016
0.016
0.017
0.018
0.019
0.019
0.020
0.021
0.021
0.022
0.023
0.024
0.024
0.025
0.026
0.026
0.027
0.028
0.029
0.029
0.030
0.031
0.031
0.032
0.033
0.034
0.034
0.035
0.036
0.037
0.037
0.038
0.039
0.039
0.040
0.041
0.042
0.042
0.043
0.008
0.011
0.016
0.032
0.002
0.003
0.004
0.006
0.007
0.008
0.009
0.010
0.011
0.012
0.013
0.014
0.016
0.017
0.018
0.019
0.020
0.021
0.022
0.023
0.024
0.026
0.027
0.028
0.029
0.030
0.031
0.032
0.033
0.034
0.036
0.037
0.038
0.039
0.040
0.041
0.042
0.043
0.044
0.045
0.047
0.048
0.049
0.050
0.051
0.052
0.053
0.054
0.055
0.057
0.058
0.059
0.060
0.061
0.062
0.063
0.064
0.065
0.067
v (m/s)
Statically balanced
Pulleys
101
Power Ratings
Section 8
Nominal Power Rating PN (kW) for β = 180° and Ld = 579 mm
v (m/s)
nk
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
Datum diameter of small pulley ddk (mm)
(min-1)
35
40
45
50
56
63
71
80
90
700
950
1450
2850
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
3100
3200
3300
3400
3500
3600
3700
3800
3900
4000
4100
4200
4300
4400
4500
4600
4700
4800
4900
5000
5100
5200
5300
5400
5500
5600
5700
5800
5900
6000
6200
6400
6600
6800
7000
7200
7400
7600
7800
8000
0.12
0.15
0.19
0.28
0.03
0.05
0.06
0.08
0.09
0.11
0.12
0.13
0.14
0.15
0.16
0.17
0.18
0.19
0.20
0.20
0.21
0.22
0.22
0.23
0.24
0.24
0.25
0.25
0.26
0.27
0.27
0.27
0.28
0.28
0.29
0.29
0.30
0.30
0.30
0.31
0.31
0.31
0.31
0.32
0.32
0.32
0.32
0.33
0.33
0.33
0.33
0.33
0.33
0.34
0.34
0.34
0.34
0.34
0.34
0.34
0.34
0.34
0.34
0.34
0.34
0.34
0.34
0.34
0.34
0.33
0.33
0.33
0.32
0.32
0.15
0.19
0.25
0.38
0.03
0.06
0.08
0.10
0.12
0.13
0.15
0.17
0.18
0.19
0.21
0.22
0.23
0.24
0.26
0.27
0.28
0.29
0.30
0.31
0.32
0.33
0.34
0.34
0.35
0.36
0.37
0.38
0.38
0.39
0.40
0.40
0.41
0.42
0.42
0.43
0.43
0.44
0.44
0.45
0.45
0.46
0.46
0.47
0.47
0.48
0.48
0.48
0.49
0.49
0.49
0.50
0.50
0.50
0.51
0.51
0.51
0.51
0.51
0.52
0.52
0.52
0.52
0.53
0.53
0.53
0.53
0.53
0.53
0.52
0.18
0.23
0.31
0.48
0.04
0.07
0.09
0.12
0.14
0.16
0.18
0.20
0.22
0.24
0.25
0.27
0.29
0.30
0.32
0.33
0.34
0.36
0.37
0.38
0.40
0.41
0.42
0.43
0.44
0.45
0.46
0.47
0.48
0.49
0.50
0.51
0.52
0.53
0.54
0.55
0.55
0.56
0.57
0.58
0.58
0.59
0.60
0.60
0.61
0.62
0.62
0.63
0.63
0.64
0.64
0.65
0.65
0.66
0.66
0.67
0.67
0.68
0.68
0.68
0.69
0.69
0.70
0.70
0.71
0.71
0.71
0.72
0.72
0.72
0.21
0.27
0.37
0.57
0.04
0.08
0.11
0.14
0.16
0.19
0.21
0.24
0.26
0.28
0.30
0.32
0.34
0.36
0.37
0.39
0.41
0.42
0.44
0.46
0.47
0.49
0.50
0.51
0.53
0.54
0.56
0.57
0.58
0.59
0.60
0.62
0.63
0.64
0.65
0.66
0.67
0.68
0.69
0.70
0.71
0.72
0.73
0.73
0.74
0.75
0.76
0.77
0.77
0.78
0.79
0.79
0.80
0.81
0.81
0.82
0.83
0.83
0.84
0.84
0.85
0.86
0.87
0.87
0.88
0.88
0.89
0.89
0.89
0.89
0.25
0.32
0.43
0.69
0.05
0.09
0.13
0.16
0.19
0.22
0.25
0.28
0.30
0.33
0.35
0.38
0.40
0.42
0.44
0.46
0.48
0.50
0.52
0.54
0.56
0.58
0.60
0.61
0.63
0.65
0.66
0.68
0.69
0.71
0.72
0.74
0.75
0.77
0.78
0.79
0.81
0.82
0.83
0.84
0.85
0.86
0.88
0.89
0.90
0.91
0.92
0.93
0.94
0.94
0.95
0.96
0.97
0.98
0.99
0.99
1.00
1.01
1.01
1.02
1.03
1.04
1.05
1.06
1.07
1.07
1.08
1.08
1.09
1.09
0.29
0.37
0.51
0.81
0.06
0.11
0.15
0.19
0.22
0.26
0.29
0.32
0.35
0.38
0.41
0.44
0.47
0.49
0.52
0.55
0.57
0.59
0.62
0.64
0.66
0.68
0.70
0.73
0.75
0.77
0.79
0.80
0.82
0.84
0.86
0.88
0.89
0.91
0.93
0.94
0.96
0.97
0.99
1.00
1.02
1.03
1.04
1.06
1.07
1.08
1.09
1.10
1.11
1.13
1.14
1.15
1.16
1.17
1.17
1.18
1.19
1.20
1.21
1.22
1.23
1.24
1.25
1.26
1.27
1.28
1.28
1.29
1.29
1.29
0.34
0.43
0.59
0.95
0.07
0.12
0.17
0.22
0.26
0.30
0.34
0.38
0.41
0.45
0.48
0.51
0.55
0.58
0.61
0.64
0.67
0.69
0.72
0.75
0.77
0.80
0.83
0.85
0.87
0.90
0.92
0.94
0.96
0.99
1.01
1.03
1.05
1.07
1.09
1.10
1.12
1.14
1.16
1.17
1.19
1.21
1.22
1.24
1.25
1.27
1.28
1.29
1.31
1.32
1.33
1.34
1.35
1.36
1.38
1.38
1.39
1.40
1.41
1.42
1.43
1.45
1.46
1.47
1.48
1.48
1.48
1.49
1.49
1.48
0.39
0.50
0.69
1.11
0.08
0.14
0.20
0.25
0.30
0.35
0.39
0.43
0.48
0.52
0.56
0.59
0.63
0.67
0.70
0.74
0.77
0.80
0.84
0.87
0.90
0.93
0.96
0.98
1.01
1.04
1.07
1.09
1.12
1.14
1.17
1.19
1.21
1.24
1.26
1.28
1.30
1.32
1.34
1.36
1.38
1.40
1.41
1.43
1.45
1.46
1.48
1.49
1.51
1.52
1.53
1.55
1.56
1.57
1.58
1.59
1.60
1.61
1.62
1.63
1.64
1.65
1.66
1.67
1.67
1.67
1.67
1.67
1.66
1.65
0.45
0.57
0.79
1.27
0.09
0.16
0.23
0.28
0.34
0.40
0.45
0.50
0.55
0.59
0.64
0.68
0.72
0.77
0.81
0.85
0.88
0.92
0.96
0.99
1.03
1.06
1.10
1.13
1.16
1.19
1.22
1.25
1.28
1.31
1.34
1.36
1.39
1.41
1.44
1.46
1.49
1.51
1.53
1.55
1.57
1.59
1.61
1.63
1.65
1.66
1.68
1.69
1.71
1.72
1.74
1.75
1.76
1.77
1.78
1.79
1.80
1.81
1.82
1.82
1.83
1.84
1.84
1.84
1.84
1.84
1.83
1.81
1.80
1.78
VB
Where v > 30 m/s, please consult our
Applications Engineering Department
Statically balanced
Pulleys
Table 46
0.00
0.00
0.00
0.01
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.01
0.01
0.02
0.03
0.00
0.00
0.00
0.00
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.04
0.04
0.04
0.04
0.04
0.04
0.04
0.04
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.06
0.06
0.06
0.06
0.06
0.06
0.06
0.06
0.06
0.07
0.07
0.07
0.07
0.07
0.07
0.08
0.08
0.08
0.08
0.09
0.09
0.09
0.09
power (kW)
speed ratio i
1,27 >1,57
to
1,57
0.01
0.02
0.03
0.05
0.00
0.00
0.01
0.01
0.01
0.01
0.01
0.01
0.02
0.02
0.02
0.02
0.02
0.03
0.03
0.03
0.03
0.03
0.04
0.04
0.04
0.04
0.04
0.04
0.05
0.05
0.05
0.05
0.05
0.06
0.06
0.06
0.06
0.06
0.06
0.07
0.07
0.07
0.07
0.07
0.08
0.08
0.08
0.08
0.08
0.09
0.09
0.09
0.09
0.09
0.09
0.10
0.10
0.10
0.10
0.10
0.11
0.11
0.11
0.11
0.11
0.12
0.12
0.13
0.13
0.13
0.14
0.14
0.14
0.15
v (m/s)
Dynamically balanced
102
Pulleys
0.01
0.02
0.03
0.06
0.00
0.00
0.01
0.01
0.01
0.01
0.01
0.02
0.02
0.02
0.02
0.02
0.03
0.03
0.03
0.03
0.04
0.04
0.04
0.04
0.04
0.05
0.05
0.05
0.05
0.05
0.06
0.06
0.06
0.06
0.06
0.07
0.07
0.07
0.07
0.07
0.08
0.08
0.08
0.08
0.09
0.09
0.09
0.09
0.09
0.10
0.10
0.10
0.10
0.10
0.11
0.11
0.11
0.11
0.11
0.12
0.12
0.12
0.12
0.12
0.13
0.13
0.14
0.14
0.15
0.15
0.15
0.16
0.16
0.17
Power Ratings
Section Z/10
Nominal Power Rating PN (kW) for β = 180° and Ld = 822 mm
v (m/s)
nk
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
Datum diameter of small pulley ddk (mm)
(min-1)
45
50
56
63
71
80
90
100
112
700
950
1450
2850
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
3100
3200
3300
3400
3500
3600
3700
3800
3900
4000
4100
4200
4300
4400
4500
4600
4700
4800
4900
5000
5100
5200
5300
5400
5500
5600
5800
6000
6200
6400
6600
6800
7000
7200
7400
7600
7800
8000
8200
8400
0.18
0.22
0.29
0.42
0.04
0.07
0.09
0.12
0.14
0.16
0.18
0.19
0.21
0.23
0.24
0.25
0.27
0.28
0.29
0.31
0.32
0.33
0.34
0.35
0.36
0.37
0.38
0.39
0.39
0.40
0.41
0.42
0.42
0.43
0.44
0.44
0.45
0.46
0.46
0.47
0.47
0.48
0.48
0.48
0.49
0.49
0.49
0.50
0.50
0.50
0.50
0.51
0.51
0.51
0.51
0.51
0.51
0.51
0.51
0.51
0.51
0.51
0.51
0.50
0.50
0.49
0.49
0.48
0.47
0.46
0.45
0.44
0.42
0.41
0.22
0.28
0.38
0.58
0.05
0.08
0.12
0.15
0.17
0.20
0.22
0.25
0.27
0.29
0.31
0.33
0.35
0.37
0.39
0.40
0.42
0.44
0.45
0.47
0.48
0.50
0.51
0.52
0.54
0.55
0.56
0.57
0.59
0.60
0.61
0.62
0.63
0.64
0.65
0.66
0.67
0.68
0.68
0.69
0.70
0.71
0.71
0.72
0.73
0.73
0.74
0.74
0.75
0.75
0.76
0.76
0.77
0.77
0.77
0.78
0.78
0.79
0.79
0.79
0.79
0.79
0.79
0.78
0.78
0.77
0.77
0.76
0.75
0.74
0.28
0.35
0.48
0.77
0.06
0.10
0.14
0.18
0.21
0.25
0.28
0.31
0.34
0.37
0.39
0.42
0.45
0.47
0.49
0.52
0.54
0.56
0.59
0.61
0.63
0.65
0.67
0.69
0.70
0.72
0.74
0.76
0.77
0.79
0.81
0.82
0.84
0.85
0.87
0.88
0.90
0.91
0.92
0.93
0.95
0.96
0.97
0.98
0.99
1.00
1.01
1.02
1.03
1.04
1.05
1.05
1.06
1.07
1.08
1.08
1.09
1.10
1.11
1.12
1.12
1.13
1.13
1.13
1.13
1.12
1.12
1.11
1.11
1.10
0.34
0.44
0.60
0.98
0.07
0.12
0.17
0.22
0.26
0.30
0.34
0.38
0.42
0.45
0.49
0.52
0.56
0.59
0.62
0.65
0.68
0.71
0.74
0.77
0.79
0.82
0.85
0.87
0.90
0.92
0.94
0.97
0.99
1.01
1.03
1.06
1.08
1.10
1.12
1.14
1.15
1.17
1.19
1.21
1.22
1.24
1.26
1.27
1.29
1.30
1.32
1.33
1.34
1.35
1.37
1.38
1.39
1.40
1.41
1.42
1.44
1.45
1.47
1.48
1.49
1.49
1.50
1.50
1.50
1.50
1.49
1.49
1.48
1.47
0.42
0.53
0.74
1.22
0.08
0.15
0.21
0.26
0.32
0.37
0.42
0.46
0.51
0.55
0.60
0.64
0.68
0.72
0.76
0.80
0.84
0.87
0.91
0.94
0.98
1.01
1.05
1.08
1.11
1.14
1.17
1.20
1.23
1.26
1.29
1.31
1.34
1.37
1.39
1.42
1.44
1.46
1.49
1.51
1.53
1.55
1.57
1.59
1.61
1.63
1.65
1.67
1.68
1.70
1.71
1.73
1.74
1.76
1.77
1.78
1.80
1.82
1.84
1.85
1.86
1.87
1.88
1.88
1.88
1.88
1.87
1.86
1.85
1.83
0.50
0.64
0.89
1.47
0.10
0.17
0.25
0.31
0.38
0.44
0.50
0.55
0.61
0.66
0.72
0.77
0.82
0.87
0.91
0.96
1.01
1.05
1.10
1.14
1.18
1.22
1.26
1.30
1.34
1.38
1.42
1.46
1.49
1.53
1.56
1.59
1.63
1.66
1.69
1.72
1.75
1.78
1.81
1.83
1.86
1.89
1.91
1.93
1.96
1.98
2.00
2.02
2.04
2.06
2.08
2.10
2.11
2.13
2.14
2.16
2.18
2.20
2.22
2.23
2.24
2.25
2.25
2.25
2.24
2.23
2.22
2.20
2.17
2.15
0.59
0.75
1.06
1.75
0.11
0.20
0.29
0.37
0.44
0.51
0.59
0.65
0.72
0.78
0.85
0.91
0.97
1.03
1.08
1.14
1.19
1.25
1.30
1.35
1.40
1.45
1.50
1.55
1.60
1.64
1.69
1.73
1.77
1.81
1.85
1.89
1.93
1.97
2.01
2.04
2.08
2.11
2.14
2.17
2.20
2.23
2.26
2.29
2.32
2.34
2.37
2.39
2.41
2.43
2.45
2.47
2.49
2.50
2.52
2.53
2.56
2.57
2.59
2.60
2.60
2.60
2.59
2.58
2.56
2.53
2.50
2.47
0.67
0.86
1.22
2.02
0.13
0.23
0.33
0.42
0.51
0.59
0.67
0.75
0.83
0.90
0.97
1.05
1.11
1.18
1.25
1.31
1.38
1.44
1.50
1.56
1.62
1.68
1.73
1.79
1.84
1.89
1.94
1.99
2.04
2.09
2.14
2.18
2.22
2.27
2.31
2.35
2.39
2.42
2.46
2.49
2.53
2.56
2.59
2.62
2.65
2.67
2.70
2.72
2.75
2.77
2.79
2.80
2.82
2.83
2.85
2.86
2.88
2.89
2.90
2.89
2.88
2.87
2.85
2.82
2.78
0.77
1.00
1.40
2.33
0.15
0.27
0.38
0.48
0.58
0.68
0.77
0.87
0.95
1.04
1.12
1.21
1.29
1.37
1.44
1.52
1.59
1.66
1.73
1.80
1.87
1.94
2.00
2.06
2.12
2.18
2.24
2.30
2.35
2.41
2.46
2.51
2.56
2.60
2.65
2.69
2.74
2.78
2.81
2.85
2.89
2.92
2.95
2.98
3.01
3.04
3.06
3.08
3.10
3.12
3.14
3.15
3.16
3.17
3.18
3.19
3.19
3.19
3.18
3.15
3.12
3.08
3.03
2.97
2.90
VB
Where v > 30 m/s, please consult our
Applications Engineering Department
Statically balanced
Pulleys
Table 47
0.00
0.00
0.01
0.01
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.04
0.04
0.04
0.04
0.04
0.04
0.02
0.02
0.03
0.07
0.00
0.00
0.01
0.01
0.01
0.01
0.02
0.02
0.02
0.02
0.03
0.03
0.03
0.03
0.04
0.04
0.04
0.04
0.05
0.05
0.05
0.05
0.06
0.06
0.06
0.06
0.06
0.07
0.07
0.07
0.07
0.08
0.08
0.08
0.08
0.09
0.09
0.09
0.09
0.10
0.10
0.10
0.10
0.11
0.11
0.11
0.11
0.12
0.12
0.12
0.12
0.13
0.13
0.13
0.13
0.13
0.14
0.14
0.15
0.15
0.16
0.16
0.17
0.17
0.18
0.18
0.19
0.19
0.20
0.20
power (kW)
speed ratio i
1,27 >1,57
to
1,57
0.03
0.04
0.06
0.11
0.00
0.01
0.01
0.02
0.02
0.02
0.03
0.03
0.03
0.04
0.04
0.05
0.05
0.05
0.06
0.06
0.07
0.07
0.07
0.08
0.08
0.08
0.09
0.09
0.10
0.10
0.10
0.11
0.11
0.12
0.12
0.12
0.13
0.13
0.13
0.14
0.14
0.15
0.15
0.15
0.16
0.16
0.17
0.17
0.17
0.18
0.18
0.18
0.19
0.19
0.20
0.20
0.20
0.21
0.21
0.22
0.22
0.23
0.24
0.25
0.25
0.26
0.27
0.28
0.28
0.29
0.30
0.31
0.32
0.32
0.03
0.04
0.06
0.12
0.00
0.01
0.01
0.02
0.02
0.03
0.03
0.03
0.04
0.04
0.05
0.05
0.06
0.06
0.06
0.07
0.07
0.08
0.08
0.09
0.09
0.10
0.10
0.10
0.11
0.11
0.12
0.12
0.13
0.13
0.13
0.14
0.14
0.15
0.15
0.16
0.16
0.16
0.17
0.17
0.18
0.18
0.19
0.19
0.19
0.20
0.20
0.21
0.21
0.22
0.22
0.23
0.23
0.23
0.24
0.24
0.25
0.26
0.27
0.28
0.29
0.29
0.30
0.31
0.32
0.33
0.34
0.35
0.35
0.36
v (m/s)
Dynamically balanced (for details see DIN 2211)
Pulleys
103
Power Ratings
Section A/13
Nominal Power Rating PN (kW) for β = 180° and Ld = 1730 mm
Statically balanced
v (m/s)
Pulleys
Table 48
nk
Datum diameter of small pulley ddk (mm)
(min-1)
71
80
90
95
100
106
112
118
125
132
140
150
160
180
700
950
1450
2850
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
3100
3200
3300
3400
3500
3600
3700
3800
3900
4000
4100
4200
4300
4400
4500
4600
4700
4800
4900
5000
5100
5200
5300
5400
5500
5600
5700
5800
5900
6000
0.52
0.63
0.81
1.04
0.12
0.21
0.29
0.35
0.41
0.47
0.52
0.57
0.61
0.65
0.69
0.73
0.76
0.79
0.82
0.85
0.88
0.90
0.92
0.94
0.96
0.97
0.99
1.00
1.01
1.02
1.03
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.03
1.02
1.01
1.00
0.99
0.98
0.96
0.94
0.92
0.90
0.88
0.85
0.83
0.80
0.77
0.73
0.70
0.66
0.62
0.58
0.54
0.50
0.45
0.40
0.35
0.30
0.74
0.92
1.22
1.75
0.16
0.28
0.39
0.48
0.57
0.66
0.74
0.81
0.88
0.95
1.01
1.08
1.14
1.19
1.24
1.30
1.34
1.39
1.44
1.48
1.52
1.55
1.59
1.62
1.66
1.68
1.71
1.74
1.76
1.78
1.80
1.81
1.83
1.84
1.85
1.86
1.86
1.87
1.87
1.87
1.86
1.86
1.85
1.84
1.82
1.81
1.79
1.77
1.75
1.72
1.69
1.66
1.63
1.59
1.55
1.51
1.47
1.42
1.37
1.32
0.97
1.23
1.67
2.51
0.20
0.36
0.50
0.63
0.75
0.86
0.97
1.08
1.18
1.27
1.37
1.46
1.54
1.63
1.71
1.78
1.86
1.93
2.00
2.06
2.12
2.18
2.24
2.30
2.35
2.40
2.45
2.49
2.53
2.57
2.61
2.64
2.67
2.70
2.72
2.74
2.76
2.78
2.79
2.80
2.81
2.81
2.81
2.81
2.80
2.79
2.78
2.76
2.74
2.72
2.69
2.66
2.63
2.59
2.55
2.51
2.46
2.41
2.35
2.29
1.09
1.38
1.89
2.88
0.22
0.39
0.55
0.70
0.84
0.97
1.09
1.21
1.32
1.44
1.54
1.64
1.74
1.84
1.93
2.02
2.11
2.19
2.27
2.35
2.42
2.49
2.56
2.63
2.69
2.75
2.80
2.86
2.91
2.95
3.00
3.04
3.08
3.11
3.14
3.17
3.19
3.21
3.23
3.24
3.25
3.26
3.26
3.26
3.26
3.25
3.24
3.22
3.20
3.18
3.15
3.12
3.08
3.04
3.00
2.95
2.90
2.84
2.78
2.71
1.21
1.53
2.11
3.25
0.24
0.43
0.61
0.77
0.92
1.07
1.21
1.34
1.47
1.59
1.71
1.83
1.94
2.05
2.16
2.26
2.36
2.45
2.54
2.63
2.72
2.80
2.88
2.95
3.02
3.09
3.16
3.22
3.28
3.33
3.38
3.43
3.47
3.51
3.55
3.58
3.61
3.64
3.66
3.67
3.69
3.70
3.70
3.70
3.70
3.69
3.68
3.66
3.64
3.61
3.58
3.55
3.51
3.46
3.41
3.36
3.30
3.23
3.16
3.09
1.35
1.71
2.37
3.67
0.26
0.48
0.67
0.85
1.02
1.19
1.35
1.50
1.64
1.78
1.92
2.05
2.18
2.30
2.42
2.54
2.65
2.76
2.87
2.97
3.06
3.16
3.25
3.33
3.42
3.50
3.57
3.64
3.71
3.77
3.83
3.88
3.93
3.98
4.02
4.06
4.09
4.12
4.15
4.17
4.18
4.19
4.20
4.20
4.19
4.18
4.17
4.15
4.12
4.09
4.06
4.01
3.97
3.91
3.86
3.79
3.72
3.64
3.56
3.47
1.48
1.89
2.62
4.09
0.29
0.52
0.74
0.94
1.13
1.31
1.48
1.65
1.82
1.97
2.13
2.27
2.42
2.55
2.69
2.82
2.95
3.07
3.19
3.30
3.41
3.51
3.61
3.71
3.80
3.89
3.98
4.05
4.13
4.20
4.27
4.33
4.38
4.43
4.48
4.52
4.56
4.59
4.62
4.64
4.65
4.66
4.66
4.66
4.66
4.64
4.62
4.60
4.57
4.53
4.48
4.43
4.38
4.31
4.24
1.62
2.07
2.88
4.50
0.31
0.57
0.80
1.02
1.23
1.43
1.62
1.81
1.99
2.16
2.33
2.49
2.65
2.80
2.95
3.10
3.23
3.37
3.50
3.62
3.75
3.86
3.97
4.08
4.18
4.28
4.37
4.46
4.54
4.62
4.69
4.75
4.82
4.87
4.92
4.96
5.00
5.03
5.06
5.08
5.09
5.10
5.10
5.10
5.08
5.07
5.04
5.01
4.97
4.92
4.86
4.80
4.73
4.66
4.57
1.78
2.28
3.17
4.96
0.34
0.62
0.88
1.12
1.35
1.57
1.78
1.99
2.18
2.38
2.56
2.74
2.92
3.09
3.25
3.41
3.57
3.72
3.86
4.00
4.13
4.26
4.38
4.50
4.61
4.72
4.82
4.92
5.01
5.09
5.17
5.24
5.30
5.36
5.41
5.45
5.49
5.52
5.55
5.57
5.58
5.58
5.57
5.56
5.54
5.51
5.47
5.43
5.38
5.31
1.94
2.49
3.46
5.41
0.37
0.67
0.95
1.21
1.46
1.71
1.94
2.16
2.38
2.59
2.79
2.99
3.19
3.37
3.55
3.73
3.90
4.06
4.22
4.37
4.51
4.65
4.79
4.91
5.03
5.15
5.26
5.36
5.45
5.54
5.62
5.70
5.76
5.82
5.87
5.92
5.95
5.98
6.00
6.01
6.02
6.01
6.00
5.98
5.94
5.90
5.85
5.79
5.72
5.64
2.12
2.72
3.79
5.90
0.40
0.73
1.03
1.32
1.60
1.86
2.12
2.36
2.60
2.83
3.06
3.28
3.49
3.69
3.89
4.08
4.26
4.44
4.62
4.78
4.94
5.09
5.23
5.37
5.50
5.62
5.74
5.85
5.95
6.04
6.12
6.20
6.27
6.32
6.37
6.41
6.44
6.47
6.48
6.48
6.47
6.46
6.43
6.39
6.34
2.34
3.01
4.19
6.48
0.44
0.80
1.14
1.46
1.76
2.06
2.34
2.61
2.88
3.13
3.38
3.62
3.86
4.08
4.30
4.51
4.72
4.91
5.10
5.28
5.46
5.62
5.78
5.93
6.06
6.20
6.32
6.43
6.53
6.63
6.71
6.79
6.85
6.90
6.95
6.98
7.00
7.01
7.01
6.99
6.97
6.93
6.88
6.82
6.74
2.56
3.29
4.59
7.03
0.48
0.87
1.24
1.59
1.93
2.25
2.56
2.86
3.15
3.43
3.70
3.97
4.22
4.47
4.71
4.94
5.16
5.37
5.58
5.77
5.96
6.13
6.30
6.46
6.60
6.74
6.86
6.98
7.08
7.18
7.26
7.33
7.38
7.43
7.46
7.48
7.48
7.47
7.45
7.42
7.37
2.99
3.85
5.36
8.03
0.55
1.02
1.45
1.86
2.25
2.63
2.99
3.34
3.69
4.01
4.33
4.64
4.94
5.22
5.50
5.76
6.02
6.26
6.49
6.71
6.91
7.10
7.28
7.45
7.60
7.74
7.87
7.98
8.07
8.15
8.21
8.26
8.29
8.30
8.30
VB
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
0.02
0.02
0.03
0.06
0.00
0.00
0.01
0.01
0.01
0.01
0.02
0.02
0.02
0.02
0.02
0.03
0.03
0.03
0.03
0.03
0.04
0.04
0.04
0.04
0.05
0.05
0.05
0.05
0.05
0.06
0.06
0.06
0.06
0.06
0.07
0.07
0.07
0.07
0.08
0.08
0.08
0.08
0.08
0.09
0.09
0.09
0.09
0.10
0.10
0.10
0.10
0.10
0.11
0.11
0.11
0.11
0.11
0.12
0.12
0.12
0.12
0.13
0.13
0.13
0.08
0.10
0.16
0.31
0.01
0.02
0.03
0.04
0.05
0.06
0.08
0.09
0.10
0.11
0.12
0.13
0.14
0.15
0.16
0.17
0.18
0.19
0.21
0.22
0.23
0.24
0.25
0.26
0.27
0.28
0.29
0.30
0.31
0.32
0.34
0.35
0.36
0.37
0.38
0.39
0.40
0.41
0.42
0.43
0.44
0.45
0.46
0.48
0.49
0.50
0.51
0.52
0.53
0.54
0.55
0.56
0.57
0.58
0.59
0.61
0.62
0.63
0.64
0.65
power (kW)
speed ratio i
1,27 >1,57
to
1,57
0.12
0.16
0.25
0.49
0.02
0.03
0.05
0.07
0.09
0.10
0.12
0.14
0.16
0.17
0.19
0.21
0.22
0.24
0.26
0.28
0.29
0.31
0.33
0.35
0.36
0.38
0.40
0.42
0.43
0.45
0.47
0.48
0.50
0.52
0.54
0.55
0.57
0.59
0.61
0.62
0.64
0.66
0.67
0.69
0.71
0.73
0.74
0.76
0.78
0.80
0.81
0.83
0.85
0.87
0.88
0.90
0.92
0.93
0.95
0.97
0.99
1.00
1.02
1.04
Where v > 30 m/s,
please consult our
Applications Engineering
Department
v (m/s)
Dynamically balanced (for details see DIN 2211)
104
Pulleys
0.14
0.18
0.28
0.55
0.02
0.04
0.06
0.08
0.10
0.12
0.14
0.16
0.18
0.19
0.21
0.23
0.25
0.27
0.29
0.31
0.33
0.35
0.37
0.39
0.41
0.43
0.45
0.47
0.49
0.51
0.53
0.54
0.56
0.58
0.60
0.62
0.64
0.66
0.68
0.70
0.72
0.74
0.76
0.78
0.80
0.82
0.84
0.86
0.88
0.89
0.91
0.93
0.95
0.97
0.99
1.01
1.03
1.05
1.07
1.09
1.11
1.13
1.15
1.17
Power Ratings
Section B/17
Nominal Power Rating PN (kW) for β = 180° and Ld = 2280 mm
Statically balanced
v (m/s)
Pulleys
Table 49
nk
Datum diameter of small pulley ddk (mm)
(min-1)
112
125
132
140
150
160
170
180
190
200
212
224
236
250
280
700
950
1450
2850
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
3100
3200
3300
3400
3500
3600
3700
3800
3900
4000
4100
4200
4300
4400
4500
4600
4700
4800
4900
5000
1.49
1.83
2.37
2.99
0.33
0.58
0.79
0.99
1.17
1.33
1.49
1.63
1.77
1.89
2.01
2.12
2.23
2.33
2.42
2.50
2.58
2.65
2.72
2.77
2.82
2.87
2.91
2.94
2.96
2.98
2.99
2.99
2.98
2.97
2.95
2.92
2.89
2.85
2.80
2.74
2.67
2.59
2.51
2.42
2.31
2.20
2.08
1.95
1.82
1.67
1.51
1.34
1.16
0.97
1.96
2.45
3.25
4.37
0.41
0.73
1.01
1.27
1.52
1.74
1.96
2.16
2.35
2.54
2.71
2.88
3.03
3.18
3.32
3.45
3.57
3.69
3.79
3.89
3.98
4.06
4.14
4.20
4.25
4.30
4.34
4.36
4.38
4.39
4.39
4.37
4.35
4.32
4.27
4.22
4.15
4.08
3.99
3.89
3.78
3.65
3.52
3.37
3.21
3.03
2.85
2.65
2.43
2.20
2.21
2.77
3.72
5.08
0.46
0.81
1.13
1.43
1.70
1.96
2.21
2.44
2.67
2.88
3.08
3.28
3.46
3.63
3.80
3.95
4.10
4.24
4.36
4.48
4.59
4.69
4.78
4.86
4.93
4.98
5.03
5.07
5.10
5.11
5.12
5.11
5.09
5.06
5.01
4.96
4.89
4.80
4.71
4.60
4.48
4.34
4.19
4.02
3.84
3.65
3.44
3.21
2.97
2.71
2.50
3.15
4.24
5.87
0.51
0.91
1.27
1.60
1.92
2.21
2.50
2.77
3.02
3.27
3.50
3.73
3.94
4.14
4.33
4.52
4.69
4.85
5.00
5.14
5.27
5.39
5.49
5.59
5.67
5.74
5.80
5.85
5.88
5.90
5.91
5.90
5.88
5.85
5.80
5.74
5.66
5.57
5.46
5.34
5.19
5.04
4.86
4.67
4.46
2.85
3.61
4.89
6.80
0.57
1.02
1.43
1.82
2.18
2.52
2.85
3.16
3.46
3.75
4.02
4.28
4.53
4.77
5.00
5.21
5.41
5.60
5.78
5.94
6.09
6.23
6.36
6.47
6.57
6.65
6.72
6.77
6.81
6.84
6.84
6.83
6.81
6.77
6.71
6.63
6.53
6.42
6.29
6.13
5.96
5.77
5.56
5.32
5.07
3.20
4.06
5.52
7.67
0.63
1.14
1.60
2.03
2.44
2.83
3.20
3.56
3.90
4.22
4.53
4.83
5.12
5.39
5.65
5.89
6.12
6.34
6.54
6.72
6.90
7.05
7.19
7.32
7.43
7.52
7.59
7.65
7.69
7.71
7.71
7.69
7.65
7.59
7.52
7.41
7.29
7.15
6.98
6.79
3.55
4.51
6.14
8.49
0.69
1.25
1.77
2.25
2.70
3.13
3.55
3.95
4.33
4.69
5.04
5.37
5.69
6.00
6.28
6.56
6.81
7.05
7.27
7.48
7.67
7.84
7.99
8.13
8.24
8.34
8.41
8.47
8.50
8.51
8.50
8.47
8.41
8.33
8.22
8.09
7.93
7.75
7.54
7.31
3.89
4.96
6.75
9.24
0.75
1.37
1.93
2.46
2.96
3.44
3.89
4.33
4.75
5.16
5.54
5.91
6.26
6.59
6.91
7.21
7.49
7.75
7.99
8.21
8.42
8.60
8.76
8.90
9.02
9.11
9.18
9.23
9.25
9.25
9.22
9.16
9.08
8.96
8.82
4.24
5.40
7.35
9.93
0.81
1.48
2.09
2.67
3.22
3.74
4.24
4.72
5.17
5.61
6.03
6.44
6.82
7.18
7.52
7.85
8.15
8.43
8.69
8.92
9.14
9.33
9.49
9.63
9.75
9.83
9.90
9.93
9.93
9.91
9.85
9.77
9.65
9.50
9.31
4.58
5.83
7.94
10.56
0.87
1.59
2.25
2.88
3.47
4.03
4.58
5.09
5.59
6.07
6.52
6.95
7.37
7.76
8.12
8.47
8.79
9.09
9.36
9.61
9.83
10.02
10.19
10.32
10.43
10.51
10.55
10.57
10.55
10.49
10.41
10.28
10.12
9.92
9.68
4.98
6.35
8.63
11.22
0.94
1.73
2.45
3.13
3.77
4.39
4.98
5.55
6.09
6.60
7.10
7.57
8.01
8.43
8.83
9.20
9.54
9.85
10.14
10.39
10.62
10.81
10.97
11.10
11.19
11.25
11.27
11.25
11.19
11.09
5.38
6.86
9.31
11.78
1.01
1.86
2.64
3.37
4.07
4.74
5.38
5.99
6.57
7.13
7.66
8.17
8.64
9.09
9.51
9.90
10.26
10.58
10.88
11.14
11.36
11.55
11.70
11.81
11.88
11.90
11.89
11.83
11.73
11.58
5.78
7.36
9.96
12.24
1.08
1.99
2.83
3.62
4.37
5.09
5.78
6.43
7.06
7.65
8.22
8.76
9.26
9.74
10.18
10.58
10.95
11.29
11.58
11.84
12.06
12.23
12.36
12.45
12.49
12.48
12.42
12.31
12.15
11.93
6.23
7.94
10.70
12.62
1.17
2.15
3.05
3.91
4.72
5.49
6.23
6.94
7.61
8.25
8.86
9.43
9.97
10.47
10.93
11.35
11.73
12.07
12.36
12.61
12.81
12.96
13.06
13.11
13.10
7.19
9.14
12.20
12.90
1.34
2.47
3.52
4.51
5.45
6.34
7.19
8.00
8.77
9.50
10.18
10.82
11.41
11.95
12.44
12.88
13.26
13.59
13.85
14.06
14.19
14.26
14.26
14.19
14.04
VB
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
0.03
0.05
0.07
0.14
0.00
0.01
0.01
0.02
0.02
0.03
0.03
0.04
0.04
0.05
0.05
0.06
0.06
0.07
0.07
0.08
0.08
0.09
0.09
0.10
0.10
0.11
0.11
0.12
0.12
0.13
0.13
0.14
0.14
0.14
0.15
0.15
0.16
0.16
0.17
0.17
0.18
0.18
0.19
0.19
0.20
0.20
0.21
0.21
0.22
0.22
0.23
0.23
0.24
0.24
0.17
0.23
0.35
0.69
0.02
0.05
0.07
0.10
0.12
0.14
0.17
0.19
0.22
0.24
0.27
0.29
0.31
0.34
0.36
0.39
0.41
0.43
0.46
0.48
0.51
0.53
0.56
0.58
0.60
0.63
0.65
0.68
0.70
0.72
0.75
0.77
0.80
0.82
0.84
0.87
0.89
0.92
0.94
0.97
0.99
1.01
1.04
1.06
1.09
1.11
1.13
1.16
1.18
1.21
power (kW)
speed ratio i
1,27 >1,57
to
1,57
0.27
0.37
0.56
1.10
0.04
0.08
0.12
0.15
0.19
0.23
0.27
0.31
0.35
0.39
0.42
0.46
0.50
0.54
0.58
0.62
0.66
0.70
0.73
0.77
0.81
0.85
0.89
0.93
0.97
1.00
1.04
1.08
1.12
1.16
1.20
1.24
1.27
1.31
1.35
1.39
1.43
1.47
1.51
1.55
1.58
1.62
1.66
1.70
1.74
1.78
1.82
1.85
1.89
1.93
0.30
0.41
0.63
1.24
0.04
0.09
0.13
0.17
0.22
0.26
0.30
0.35
0.39
0.43
0.48
0.52
0.56
0.61
0.65
0.69
0.74
0.78
0.82
0.87
0.91
0.96
1.00
1.04
1.09
1.13
1.17
1.22
1.26
1.30
1.35
1.39
1.43
1.48
1.52
1.56
1.61
1.65
1.69
1.74
1.78
1.82
1.87
1.91
1.95
2.00
2.04
2.08
2.13
2.17
Where v > 30 m/s,
please consult our
Applications Engineering
Department
v (m/s)
Dynamically balanced (for details see DIN 2211)
Pulleys
105
Power Ratings
Section 20
Nominal Power Rating PN (kW) for β = 180° and Ld = 3198 mm
Statically balanced
v (m/s)
Pulleys
Table 50
nk
Datum diameter of small pulley ddk (mm)
(min-1)
140
160
180
200
224
236
250
280
315
355
700
950
1450
2850
50
100
150
200
250
300
350
400
450
500
550
600
650
700
750
800
850
900
950
1000
1050
1100
1150
1200
1250
1300
1350
1400
1450
1500
1550
1600
1650
1700
1750
1800
1850
1900
1950
2000
2050
2100
2150
2200
2250
2300
2350
2400
2450
2500
2550
2600
2650
2700
2750
2800
2850
2900
2950
3000
2.62
3.21
4.08
4.64
0.34
0.60
0.82
1.04
1.23
1.42
1.59
1.76
1.92
2.07
2.22
2.36
2.49
2.62
2.75
2.87
2.99
3.10
3.21
3.31
3.41
3.51
3.60
3.69
3.78
3.86
3.94
4.01
4.08
4.15
4.22
4.28
4.34
4.39
4.44
4.49
4.53
4.57
4.61
4.64
4.67
4.70
4.72
4.74
4.75
4.76
4.77
4.77
4.77
4.77
4.76
4.75
4.74
4.72
4.69
4.67
4.64
4.60
4.56
4.52
3.33
4.11
5.30
6.11
0.41
0.73
1.02
1.28
1.53
1.76
1.99
2.20
2.41
2.61
2.80
2.98
3.16
3.33
3.50
3.66
3.81
3.96
4.11
4.25
4.39
4.52
4.64
4.76
4.88
4.99
5.10
5.20
5.30
5.40
5.49
5.57
5.65
5.73
5.80
5.87
5.93
5.98
6.04
6.08
6.13
6.16
6.20
6.22
6.25
6.27
6.28
6.29
6.29
6.28
6.28
6.26
6.24
6.22
6.19
6.15
6.11
6.06
6.01
5.95
4.02
4.99
6.46
7.29
0.48
0.86
1.20
1.52
1.82
2.11
2.38
2.64
2.89
3.13
3.37
3.59
3.81
4.02
4.23
4.43
4.62
4.81
4.99
5.16
5.33
5.49
5.65
5.80
5.94
6.08
6.21
6.34
6.46
6.58
6.69
6.79
6.89
6.98
7.07
7.15
7.22
7.29
7.35
7.41
7.45
7.50
7.53
7.56
7.58
7.60
7.61
7.61
7.60
7.59
7.57
7.54
7.51
7.47
7.42
7.36
7.29
7.22
7.14
7.05
4.70
5.83
7.56
8.16
0.55
0.99
1.39
1.76
2.11
2.44
2.76
3.07
3.37
3.65
3.93
4.19
4.45
4.70
4.94
5.18
5.40
5.62
5.83
6.04
6.24
6.43
6.61
6.79
6.96
7.12
7.27
7.42
7.56
7.69
7.82
7.94
8.05
8.15
8.24
8.33
8.41
8.48
8.55
8.60
8.65
8.69
8.71
8.74
8.75
8.75
8.75
8.73
8.71
8.67
8.63
8.58
8.51
8.44
8.36
8.27
8.16
8.05
7.93
7.79
5.49
6.82
8.80
8.75
0.63
1.15
1.61
2.04
2.45
2.84
3.22
3.58
3.92
4.26
4.58
4.90
5.20
5.49
5.78
6.05
6.32
6.57
6.82
7.06
7.29
7.51
7.72
7.92
8.11
8.30
8.47
8.64
8.80
8.94
9.08
9.21
9.33
9.43
9.53
9.62
9.69
9.76
9.81
9.86
9.89
9.91
9.92
9.92
9.91
9.88
9.84
9.79
9.73
9.66
9.57
9.47
9.35
9.22
9.08
8.92
8.75
8.57
8.37
8.16
5.88
7.30
9.38
8.85
0.68
1.22
1.72
2.18
2.62
3.04
3.44
3.83
4.20
4.56
4.90
5.24
5.56
5.88
6.18
6.48
6.76
7.03
7.30
7.55
7.79
8.03
8.25
8.47
8.67
8.86
9.05
9.22
9.38
9.53
9.67
9.80
9.92
10.02
10.12
10.20
10.27
10.33
10.38
10.41
10.43
10.44
10.43
10.41
10.38
10.34
10.28
10.20
10.11
10.01
9.89
9.76
9.61
9.44
9.26
6.32
7.84
10.03
8.79
0.72
1.31
1.84
2.34
2.82
3.27
3.70
4.11
4.51
4.90
5.28
5.64
5.99
6.32
6.65
6.97
7.27
7.56
7.84
8.11
8.37
8.62
8.86
9.08
9.30
9.50
9.69
9.87
10.03
10.18
10.33
10.45
10.57
10.67
10.76
10.83
10.89
10.94
10.97
10.99
10.99
10.98
10.95
10.91
10.85
10.77
10.68
10.57
10.44
10.30
7.25
8.97
11.32
7.99
0.83
1.50
2.11
2.68
3.23
3.75
4.24
4.72
5.18
5.63
6.06
6.47
6.87
7.25
7.63
7.98
8.33
8.66
8.97
9.27
9.56
9.83
10.09
10.33
10.56
10.77
10.97
11.15
11.32
11.46
11.60
11.71
11.81
11.89
11.95
11.99
12.02
12.02
12.01
11.97
11.92
11.84
11.75
11.63
11.49
11.33
11.14
10.94
10.71
10.45
8.30
10.21
12.61
5.78
0.94
1.71
2.42
3.07
3.70
4.29
4.87
5.41
5.94
6.45
6.94
7.41
7.86
8.30
8.72
9.12
9.50
9.87
10.21
10.54
10.85
11.14
11.41
11.66
11.90
12.11
12.30
12.47
12.61
12.74
12.84
12.92
12.97
13.00
13.01
12.99
12.94
12.87
12.77
12.65
12.49
12.31
12.10
11.86
11.59
9.44
11.53
13.81
1.08
1.96
2.76
3.51
4.23
4.91
5.56
6.19
6.79
7.36
7.92
8.45
8.96
9.44
9.91
10.35
10.77
11.16
11.53
11.88
12.20
12.50
12.77
13.01
13.23
13.42
13.58
13.71
13.81
13.88
13.92
13.93
13.90
13.84
13.75
13.62
13.46
13.26
13.02
12.74
VB
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
0.04
0.05
0.07
0.15
0.00
0.01
0.01
0.01
0.01
0.02
0.02
0.02
0.02
0.03
0.03
0.03
0.03
0.04
0.04
0.04
0.04
0.05
0.05
0.05
0.05
0.06
0.06
0.06
0.06
0.07
0.07
0.07
0.07
0.08
0.08
0.08
0.08
0.09
0.09
0.09
0.09
0.10
0.10
0.10
0.11
0.11
0.11
0.11
0.12
0.12
0.12
0.12
0.13
0.13
0.13
0.13
0.14
0.14
0.14
0.14
0.15
0.15
0.15
0.15
0.18
0.24
0.37
0.73
0.01
0.03
0.04
0.05
0.06
0.08
0.09
0.10
0.12
0.13
0.14
0.15
0.17
0.18
0.19
0.21
0.22
0.23
0.24
0.26
0.27
0.28
0.29
0.31
0.32
0.33
0.35
0.36
0.37
0.38
0.40
0.41
0.42
0.44
0.45
0.46
0.47
0.49
0.50
0.51
0.53
0.54
0.55
0.56
0.58
0.59
0.60
0.62
0.63
0.64
0.65
0.67
0.68
0.69
0.71
0.72
0.73
0.74
0.76
0.77
power (kW)
speed ratio i
1,27 >1,57
to
1,57
0.29
0.39
0.59
1.17
0.02
0.04
0.06
0.08
0.10
0.12
0.14
0.16
0.18
0.21
0.23
0.25
0.27
0.29
0.31
0.33
0.35
0.37
0.39
0.41
0.43
0.45
0.47
0.49
0.51
0.53
0.55
0.57
0.59
0.62
0.64
0.66
0.68
0.70
0.72
0.74
0.76
0.78
0.80
0.82
0.84
0.86
0.88
0.90
0.92
0.94
0.96
0.98
1.01
1.03
1.05
1.07
1.09
1.11
1.13
1.15
1.17
1.19
1.21
1.23
Where v > 30 m/s,
please consult our
Applications Engineering
Department
v (m/s)
dynamically balanced
106
Pulleys
0.32
0.44
0.67
1.31
0.02
0.05
0.07
0.09
0.12
0.14
0.16
0.18
0.21
0.23
0.25
0.28
0.30
0.32
0.35
0.37
0.39
0.42
0.44
0.46
0.48
0.51
0.53
0.55
0.58
0.60
0.62
0.65
0.67
0.69
0.71
0.74
0.76
0.78
0.81
0.83
0.85
0.88
0.90
0.92
0.95
0.97
0.99
1.01
1.04
1.06
1.08
1.11
1.13
1.15
1.18
1.20
1.22
1.25
1.27
1.29
1.31
1.34
1.36
1.38
Power Ratings
Section C/22
Nominal Power Rating PN (kW) for β = 180° and Ld = 3808 mm
Statically balanced
v (m/s)
Pulleys
Table 51
nk
Datum diameter of small pulley ddk (mm)
(min-1)
180
200
212
224
236
250
265
280
300
315
700
950
1450
2850
50
100
150
200
250
300
350
400
450
500
550
600
650
700
750
800
850
900
950
1000
1050
1100
1150
1200
1250
1300
1350
1400
1450
1500
1550
1600
1650
1700
1750
1800
1850
1900
1950
2000
2050
2100
2150
2200
2250
2300
2350
2400
2450
2500
2550
2600
2650
2700
2750
2800
2850
2900
2950
3000
3050
3100
3150
3200
3250
4.51
5.60
7.23
7.54
0.53
0.95
1.34
1.69
2.03
2.35
2.66
2.95
3.23
3.51
3.77
4.03
4.27
4.51
4.74
4.97
5.18
5.39
5.60
5.79
5.98
6.16
6.33
6.50
6.66
6.81
6.96
7.09
7.23
7.35
7.46
7.57
7.67
7.77
7.85
7.93
8.00
8.06
8.12
8.16
8.20
8.23
8.25
8.26
8.26
8.25
8.24
8.21
8.18
8.13
8.08
8.01
7.94
7.86
7.76
7.66
7.54
7.42
7.28
7.14
6.98
6.81
6.63
6.44
6.24
5.66
7.08
9.24
9.81
0.64
1.16
1.63
2.07
2.49
2.90
3.28
3.66
4.02
4.37
4.71
5.04
5.36
5.66
5.97
6.26
6.54
6.81
7.08
7.33
7.58
7.82
8.05
8.27
8.48
8.69
8.88
9.07
9.24
9.41
9.57
9.71
9.85
9.98
10.10
10.20
10.30
10.39
10.46
10.53
10.58
10.63
10.66
10.68
10.69
10.68
10.67
10.64
10.60
10.55
10.48
10.40
10.31
10.20
10.08
9.95
9.81
9.64
9.47
9.28
9.08
8.86
8.62
8.37
8.11
6.35
7.95
10.42
10.94
0.70
1.28
1.80
2.30
2.77
3.22
3.66
4.08
4.48
4.88
5.26
5.63
6.00
6.35
6.69
7.02
7.34
7.65
7.95
8.24
8.52
8.80
9.06
9.31
9.55
9.78
10.00
10.22
10.42
10.60
10.78
10.95
11.11
11.25
11.38
11.50
11.61
11.71
11.79
11.87
11.92
11.97
12.00
12.02
12.03
12.02
12.00
11.96
11.91
11.84
11.76
11.66
11.55
11.42
11.28
11.12
10.94
10.75
10.54
10.31
7.02
8.81
11.56
11.91
0.76
1.39
1.97
2.52
3.04
3.54
4.03
4.49
4.95
5.39
5.81
6.23
6.63
7.02
7.40
7.77
8.13
8.48
8.81
9.14
9.45
9.76
10.05
10.33
10.60
10.86
11.10
11.34
11.56
11.77
11.97
12.15
12.32
12.48
12.62
12.75
12.87
12.97
13.06
13.14
13.20
13.24
13.27
13.28
13.28
13.26
13.23
13.17
13.10
13.02
12.91
12.79
12.65
12.49
12.32
12.12
11.91
11.67
11.42
11.15
7.69
9.67
12.67
12.69
0.83
1.51
2.15
2.75
3.32
3.87
4.40
4.91
5.41
5.89
6.36
6.82
7.26
7.69
8.11
8.52
8.91
9.29
9.67
10.02
10.37
10.70
11.02
11.33
11.63
11.91
12.18
12.43
12.67
12.90
13.11
13.31
13.49
13.66
13.82
13.95
14.07
14.18
14.27
14.34
14.40
14.43
14.45
14.45
14.44
14.40
14.35
14.27
14.18
14.07
13.94
13.78
13.61
13.41
13.19
8.47
10.64
13.93
13.37
0.90
1.65
2.35
3.00
3.63
4.24
4.82
5.39
5.94
6.47
6.99
7.50
7.99
8.47
8.93
9.38
9.81
10.24
10.64
11.04
11.42
11.79
12.14
12.47
12.80
13.10
13.40
13.67
13.93
14.18
14.41
14.62
14.81
14.99
15.14
15.28
15.41
15.51
15.59
15.65
15.70
15.72
15.72
15.71
15.67
15.60
15.52
15.41
15.28
15.13
9.28
11.67
15.24
13.79
0.98
1.80
2.56
3.28
3.97
4.64
5.28
5.90
6.51
7.09
7.67
8.22
8.76
9.28
9.79
10.29
10.76
11.23
11.67
12.11
12.52
12.92
13.30
13.67
14.02
14.35
14.66
14.96
15.24
15.50
15.73
15.95
16.15
16.33
16.49
16.63
16.74
16.83
16.90
16.95
16.97
16.97
16.95
16.90
16.83
16.73
16.60
16.45
16.26
16.06
10.09
12.69
16.49
13.88
1.06
1.95
2.77
3.55
4.31
5.03
5.73
6.41
7.07
7.71
8.33
8.94
9.52
10.09
10.65
11.18
11.70
12.20
12.69
13.15
13.60
14.03
14.44
14.83
15.21
15.56
15.89
16.20
16.49
16.76
17.00
17.23
17.42
17.60
17.75
17.88
17.98
18.06
18.10
18.13
18.12
18.09
18.03
17.94
17.82
11.16
14.01
18.08
13.47
1.16
2.14
3.05
3.92
4.75
5.55
6.33
7.08
7.81
8.52
9.21
9.88
10.53
11.16
11.77
12.36
12.93
13.48
14.01
14.52
15.01
15.47
15.91
16.34
16.73
17.11
17.46
17.78
18.08
18.35
18.60
18.81
19.00
19.17
19.30
19.40
19.47
19.51
19.52
19.50
19.44
19.35
19.23
19.07
18.87
11.94
14.98
19.20
12.74
1.24
2.28
3.26
4.19
5.08
5.94
6.77
7.58
8.36
9.12
9.86
10.58
11.27
11.94
12.60
13.23
13.83
14.42
14.98
15.52
16.03
16.52
16.98
17.42
17.83
18.22
18.58
18.91
19.20
19.47
19.71
19.92
20.10
20.24
20.35
20.43
20.47
20.47
20.44
20.37
335
355
375
400
450
12.98 14.00 15.00 16.22 18.58
16.24 17.47 18.66 20.10 22.79
20.62 21.93 23.13 24.46 26.56
1.34
2.48
3.54
4.55
5.52
6.45
7.36
8.24
9.09
9.92
10.72
11.50
12.25
12.98
13.68
14.36
15.01
15.64
16.24
16.81
17.36
17.87
18.36
18.82
19.24
19.64
20.00
20.33
20.62
20.88
21.10
21.28
21.43
21.54
21.61
21.64
21.62
21.57
21.47
21.32
1.44
2.67
3.81
4.91
5.95
6.97
7.94
8.89
9.81
10.70
11.57
12.41
13.21
14.00
14.75
15.47
16.17
16.83
17.47
18.07
18.64
19.18
19.68
20.15
20.58
20.98
21.33
21.65
21.93
22.16
22.36
22.51
22.61
22.67
22.69
22.65
22.57
22.44
22.25
22.02
1.54
2.86
4.09
5.26
6.39
7.47
8.52
9.54
10.53
11.48
12.41
13.30
14.16
15.00
15.80
16.56
17.30
18.00
18.66
19.29
19.88
20.43
20.94
21.42
21.85
22.23
22.58
22.87
23.13
23.33
23.48
23.59
23.64
23.64
23.58
1.67
3.09
4.43
5.70
6.92
8.10
9.24
10.34
11.41
12.44
13.44
14.40
15.33
16.22
17.07
17.89
18.67
19.40
20.10
20.75
21.36
21.92
22.43
22.90
23.32
23.69
24.00
24.26
24.46
24.61
24.70
24.72
24.69
24.59
24.42
1.92
3.56
5.10
6.57
7.98
9.34
10.66
11.92
13.14
14.32
15.46
16.55
17.59
18.58
19.53
20.42
21.27
22.05
22.79
23.46
24.07
24.62
25.11
25.53
25.88
26.17
26.37
26.51
26.56
26.54
26.43
26.24
25.96
25.59
25.13
VB
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
power (kW)
speed ratio i
1,27 >1,57
to
1,57
0.08 0.40 0.63
0.11 0.54 0.86
0.16 0.82 1.31
0.32 1.61 2.58
0.01 0.03 0.05
0.01 0.06 0.09
0.02 0.08 0.14
0.02 0.11 0.18
0.03 0.14 0.23
0.03 0.17 0.27
0.04 0.20 0.32
0.05 0.23 0.36
0.05 0.25 0.41
0.06 0.28 0.45
0.06 0.31 0.50
0.07 0.34 0.54
0.07 0.37 0.59
0.08 0.40 0.63
0.08 0.42 0.68
0.09 0.45 0.72
0.10 0.48 0.77
0.10 0.51 0.81
0.11 0.54 0.86
0.11 0.57 0.91
0.12 0.59 0.95
0.12 0.62 1.00
0.13 0.65 1.04
0.14 0.68 1.09
0.14 0.71 1.13
0.15 0.74 1.18
0.15 0.76 1.22
0.16 0.79 1.27
0.16 0.82 1.31
0.17 0.85 1.36
0.18 0.88 1.40
0.18 0.91 1.45
0.19 0.93 1.49
0.19 0.96 1.54
0.20 0.99 1.58
0.20 1.02 1.63
0.21 1.05 1.67
0.22 1.07 1.72
0.22 1.10 1.77
0.23 1.13 1.81
0.23 1.16 1.86
0.24 1.19 1.90
0.24 1.22 1.95
0.25 1.24 1.99
0.25 1.27 2.04
0.26 1.30 2.08
0.27 1.33 2.13
0.27 1.36 2.17
0.28 1.39 2.22
0.28 1.41 2.26
0.29 1.44 2.31
0.29 1.47 2.35
0.30 1.50 2.40
0.31 1.53 2.44
0.31 1.56 2.49
0.32 1.58 2.53
0.32 1.61 2.58
0.33 1.64 2.63
0.33 1.67 2.67
0.34 1.70 2.72
0.35 1.73 2.76
0.35 1.75 2.81
0.36 1.78 2.85
0.36 1.81 2.90
0.37 1.84 2.94
0.71
0.97
1.48
2.90
0.05
0.10
0.15
0.20
0.25
0.31
0.36
0.41
0.46
0.51
0.56
0.61
0.66
0.71
0.76
0.81
0.87
0.92
0.97
1.02
1.07
1.12
1.17
1.22
1.27
1.32
1.37
1.42
1.48
1.53
1.58
1.63
1.68
1.73
1.78
1.83
1.88
1.93
1.98
2.04
2.09
2.14
2.19
2.24
2.29
2.34
2.39
2.44
2.49
2.54
2.60
2.65
2.70
2.75
2.80
2.85
2.90
2.95
3.00
3.05
3.10
3.15
3.21
3.26
3.31
Where v > 30 m/s,
please consult our
Applications Engineering
Department
v (m/s)
Dynamically balanced (for details see DIN 2211)
Pulleys
107
Power Ratings
Section 25
Nominal Power Rating PN (kW) for β = 180° and Ld = 4561 mm
Statically balanced
v (m/s)
Pulleys
Table 52
nk
Datum diameter of small pulley ddk (mm)
(min-1)
224
236
250
280
315
355
400
450
500
560
700
950
1450
2850
50
100
150
200
250
300
350
400
450
500
550
600
650
700
750
800
850
900
950
1000
1050
1100
1150
1200
1250
1300
1350
1400
1450
1500
1550
1600
1650
1700
1750
1800
1850
1900
1950
2000
2050
2100
2150
2200
2250
2300
2350
2400
2450
2500
5.68
6.86
8.15
2.14
0.71
1.26
1.76
2.22
2.65
3.06
3.44
3.81
4.16
4.49
4.81
5.12
5.41
5.68
5.95
6.20
6.43
6.65
6.86
7.06
7.24
7.40
7.55
7.69
7.81
7.92
8.02
8.09
8.15
8.20
8.23
8.24
8.24
8.22
8.18
8.12
8.04
7.95
7.84
7.70
7.55
7.38
7.19
6.97
6.74
6.48
6.21
5.91
5.58
5.24
6.47
7.86
9.43
2.79
0.78
1.40
1.96
2.48
2.97
3.43
3.88
4.30
4.70
5.09
5.45
5.81
6.15
6.47
6.78
7.07
7.35
7.61
7.86
8.09
8.30
8.50
8.69
8.85
9.00
9.14
9.25
9.35
9.43
9.50
9.54
9.57
9.57
9.56
9.52
9.47
9.39
9.29
9.17
9.03
8.87
8.68
8.47
8.23
7.97
7.69
7.38
7.04
6.68
6.29
7.38
9.00
10.88
3.23
0.87
1.56
2.20
2.79
3.34
3.87
4.38
4.86
5.33
5.77
6.20
6.61
7.00
7.38
7.73
8.08
8.40
8.71
9.00
9.27
9.52
9.76
9.98
10.18
10.36
10.52
10.66
10.78
10.88
10.96
11.01
11.05
11.06
11.04
11.01
10.95
10.87
10.76
10.62
10.46
10.27
10.06
9.82
9.55
9.25
8.92
8.56
8.17
7.75
7.30
9.28
11.38
13.78
2.91
1.05
1.91
2.69
3.43
4.13
4.80
5.44
6.06
6.65
7.22
7.77
8.29
8.80
9.28
9.75
10.19
10.61
11.00
11.38
11.73
12.06
12.36
12.64
12.90
13.13
13.33
13.51
13.66
13.78
13.87
13.93
13.97
13.97
13.94
13.88
13.79
13.66
13.50
13.30
13.07
12.80
12.49
12.15
11.76
11.34
11.45
14.03
16.81
0.19
1.26
2.31
3.27
4.18
5.04
5.87
6.67
7.43
8.17
8.88
9.56
10.22
10.85
11.45
12.02
12.57
13.09
13.57
14.03
14.46
14.86
15.22
15.56
15.86
16.12
16.35
16.54
16.69
16.81
16.89
16.92
16.92
16.87
16.78
16.64
16.46
16.23
15.95
15.63
15.25
13.84
16.90
19.77
16.43
19.91
22.40
19.16
22.94
24.36
21.74
25.63
25.21
24.62
28.37
24.60
1.50
2.76
3.92
5.02
6.07
7.08
8.05
8.98
9.87
10.74
11.56
12.36
13.12
13.84
14.53
15.18
15.79
16.37
16.90
17.40
17.85
18.26
18.62
18.93
19.20
19.42
19.59
19.71
19.77
19.78
19.73
19.63
19.46
19.24
18.95
1.76
3.26
4.64
5.96
7.21
8.41
9.57
10.68
11.75
12.77
13.75
14.69
15.58
16.43
17.22
17.97
18.67
19.31
19.91
20.44
20.92
21.33
21.69
21.98
22.20
22.36
22.45
22.46
22.40
22.26
2.06
3.81
5.44
6.98
8.46
9.87
11.23
12.53
13.78
14.97
16.11
17.18
18.20
19.16
20.05
20.88
21.64
22.33
22.94
23.48
23.93
24.31
24.60
24.80
24.90
24.92
24.83
24.65
24.36
23.96
2.35
4.35
6.22
7.99
9.69
11.30
12.86
14.34
15.75
17.10
18.37
19.57
20.70
21.74
22.70
23.57
24.35
25.04
25.63
26.12
26.50
26.77
26.92
26.96
26.87
2.69
5.00
7.15
9.19
11.14
12.99
14.76
16.45
18.05
19.56
20.97
22.29
23.51
24.62
25.61
26.49
27.25
27.88
28.37
28.72
28.93
28.99
28.88
28.62
28.18
VB
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
0.12
0.16
0.25
0.49
0.01
0.02
0.03
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.10
0.10
0.11
0.12
0.13
0.14
0.15
0.16
0.16
0.17
0.18
0.19
0.20
0.21
0.22
0.23
0.23
0.24
0.25
0.26
0.27
0.28
0.29
0.29
0.30
0.31
0.32
0.33
0.34
0.35
0.36
0.36
0.37
0.38
0.39
0.40
0.41
0.42
0.42
0.43
0.61
0.82
1.26
2.47
0.04
0.09
0.13
0.17
0.22
0.26
0.30
0.35
0.39
0.43
0.48
0.52
0.56
0.61
0.65
0.69
0.74
0.78
0.82
0.87
0.91
0.95
1.00
1.04
1.08
1.13
1.17
1.21
1.26
1.30
1.34
1.39
1.43
1.47
1.52
1.56
1.60
1.65
1.69
1.73
1.78
1.82
1.86
1.91
1.95
1.99
2.04
2.08
2.12
2.17
power (kW)
speed ratio i
1,27 >1,57
to
1,57
0.97
1.32
2.01
3.95
0.07
0.14
0.21
0.28
0.35
0.42
0.49
0.55
0.62
0.69
0.76
0.83
0.90
0.97
1.04
1.11
1.18
1.25
1.32
1.39
1.46
1.53
1.60
1.66
1.73
1.80
1.87
1.94
2.01
2.08
2.15
2.22
2.29
2.36
2.43
2.50
2.57
2.64
2.70
2.77
2.84
2.91
2.98
3.05
3.12
3.19
3.26
3.33
3.40
3.47
Where v > 30 m/s,
please consult our
Applications Engineering
Department
v (m/s)
Dynamically balanced (for details see DIN 2211)
108
Pulleys
1.09
1.48
2.26
4.44
0.08
0.16
0.23
0.31
0.39
0.47
0.55
0.62
0.70
0.78
0.86
0.94
1.01
1.09
1.17
1.25
1.33
1.40
1.48
1.56
1.64
1.72
1.79
1.87
1.95
2.03
2.10
2.18
2.26
2.34
2.42
2.49
2.57
2.65
2.73
2.81
2.88
2.96
3.04
3.12
3.20
3.27
3.35
3.43
3.51
3.59
3.66
3.74
3.82
3.90
Power Ratings
Section D/32
Nominal Power Rating PN (kW) for β = 180° and Ld = 6375 mm
Statically balanced
v (m/s)
Pulleys
Table 53
nk
Datum diameter of small pulley ddk (mm)
(min-1)
315
355
375
400
425
450
500
560
630
670
710
750
800
900
700
950
1450
20
40
60
80
100
120
140
160
180
200
220
240
260
280
300
320
340
360
380
400
420
440
460
480
500
520
540
560
580
600
620
640
660
680
700
720
740
760
780
800
820
840
860
880
900
920
940
960
980
1000
1020
1040
1060
1080
1100
1120
1140
1160
1180
1200
1220
1240
1260
1280
1300
1320
1340
1360
1380
1400
15.30
18.50
21.43
0.80
1.46
2.08
2.66
3.22
3.76
4.28
4.79
5.29
5.77
6.24
6.70
7.16
7.60
8.04
8.47
8.89
9.30
9.71
10.11
10.50
10.88
11.26
11.63
12.00
12.36
12.71
13.06
13.40
13.73
14.06
14.38
14.69
15.00
15.30
15.59
15.88
16.16
16.44
16.71
16.97
17.22
17.47
17.71
17.95
18.18
18.40
18.61
18.82
19.02
19.21
19.39
19.57
19.74
19.90
20.06
20.20
20.34
20.47
20.60
20.71
20.82
20.92
21.01
21.09
21.16
21.23
21.29
21.34
21.37
19.17
23.20
26.56
0.96
1.77
2.53
3.25
3.94
4.61
5.26
5.89
6.51
7.11
7.71
8.29
8.86
9.42
9.97
10.51
11.04
11.56
12.07
12.58
13.08
13.56
14.04
14.52
14.98
15.44
15.88
16.32
16.75
17.18
17.59
18.00
18.40
18.79
19.17
19.54
19.90
20.26
20.61
20.95
21.28
21.60
21.91
22.21
22.51
22.79
23.07
23.33
23.59
23.83
24.07
24.30
24.51
24.72
24.92
25.10
25.28
25.44
25.59
25.74
25.87
25.99
26.10
26.20
26.28
26.36
26.42
26.47
26.51
26.54
21.05
25.45
28.81
1.04
1.93
2.75
3.54
4.29
5.03
5.74
6.43
7.11
7.78
8.43
9.07
9.70
10.31
10.92
11.51
12.10
12.68
13.24
13.80
14.35
14.89
15.41
15.93
16.45
16.95
17.44
17.92
18.40
18.86
19.32
19.77
20.20
20.63
21.05
21.46
21.86
22.25
22.63
23.00
23.36
23.71
24.05
24.38
24.70
25.00
25.30
25.59
25.86
26.13
26.38
26.62
26.85
27.07
27.27
27.47
27.65
27.82
27.98
28.12
28.25
28.37
28.48
28.57
28.65
28.72
28.77
28.81
28.83
28.84
23.36
28.15
31.31
1.14
2.12
3.03
3.90
4.74
5.55
6.34
7.11
7.87
8.61
9.33
10.04
10.74
11.43
12.10
12.77
13.42
14.06
14.69
15.31
15.92
16.52
17.11
17.69
18.25
18.81
19.36
19.90
20.42
20.94
21.45
21.94
22.43
22.90
23.36
23.81
24.25
24.68
25.10
25.50
25.90
26.28
26.65
27.00
27.35
27.68
28.00
28.31
28.60
28.88
29.15
29.40
29.64
29.87
30.08
30.28
30.46
30.63
30.78
30.92
31.04
31.15
31.24
31.32
31.38
31.43
31.45
31.47
31.46
31.44
25.62
30.75
33.45
1.24
2.31
3.31
4.26
5.18
6.07
6.94
7.78
8.61
9.43
10.22
11.01
11.78
12.53
13.27
14.00
14.72
15.43
16.12
16.80
17.47
18.13
18.78
19.42
20.04
20.65
21.25
21.84
22.42
22.98
23.53
24.07
24.60
25.11
25.62
26.11
26.58
27.04
27.49
27.93
28.35
28.76
29.16
29.54
29.90
30.25
30.59
30.91
31.21
31.50
31.78
32.04
32.28
32.50
32.71
32.91
33.08
33.24
33.38
33.50
33.61
33.69
33.76
33.81
33.84
33.86
33.85
33.82
33.78
33.71
27.82
33.23
35.22
1.34
2.50
3.58
4.61
5.61
6.58
7.53
8.45
9.36
10.24
11.11
11.97
12.80
13.63
14.44
15.23
16.01
16.78
17.54
18.28
19.01
19.73
20.43
21.12
21.80
22.46
23.11
23.75
24.37
24.98
25.58
26.16
26.73
27.28
27.82
28.34
28.85
29.34
29.82
30.28
30.73
31.16
31.57
31.97
32.35
32.71
33.06
33.39
33.70
33.99
34.26
34.52
34.76
34.97
35.17
35.35
35.51
35.65
35.77
35.86
35.94
35.99
36.03
36.04
36.03
36.00
35.94
35.86
35.76
35.64
32.05
37.80
37.54
1.54
2.87
4.13
5.32
6.48
7.61
8.71
9.78
10.83
11.86
12.87
13.86
14.84
15.79
16.73
17.66
18.56
19.46
20.33
21.19
22.03
22.86
23.67
24.46
25.24
26.00
26.74
27.47
28.18
28.87
29.54
30.20
30.83
31.45
32.05
32.63
33.19
33.73
34.25
34.75
35.23
35.68
36.12
36.53
36.92
37.29
37.64
37.96
38.26
38.53
38.78
39.01
39.21
39.38
39.53
39.66
39.75
39.82
39.86
39.87
39.86
39.82
39.74
39.64
39.51
36.82
42.59
38.01
1.78
3.32
4.77
6.17
7.51
8.82
10.10
11.35
12.57
13.77
14.95
16.10
17.24
18.35
19.44
20.51
21.56
22.59
23.60
24.59
25.56
26.51
27.44
28.34
29.23
30.09
30.93
31.75
32.55
33.32
34.07
34.79
35.49
36.17
36.82
37.44
38.04
38.61
39.15
39.66
40.15
40.61
41.04
41.44
41.81
42.14
42.45
42.72
42.97
43.18
43.35
43.49
43.60
43.67
43.71
43.71
43.67
43.60
43.49
43.34
41.91
47.12
35.03
2.05
3.84
5.52
7.14
8.70
10.23
11.71
13.16
14.58
15.97
17.34
18.68
19.99
21.27
22.53
23.77
24.97
26.16
27.31
28.44
29.55
30.62
31.67
32.69
33.69
34.65
35.58
36.49
37.36
38.20
39.01
39.79
40.53
41.24
41.91
42.55
43.16
43.72
44.25
44.74
45.19
45.60
45.97
46.30
46.59
46.84
47.04
47.19
47.31
47.37
47.39
47.36
47.29
47.16
46.99
44.59
49.16
47.08
50.77
49.38
51.93
51.98
52.71
56.17
51.90
2.21
4.13
5.95
7.69
9.38
11.02
12.62
14.19
15.72
17.22
18.69
20.12
21.53
22.91
24.27
25.59
26.88
28.15
29.38
30.59
31.76
32.90
34.01
35.09
36.13
37.14
38.12
39.06
39.96
40.83
41.66
42.45
43.20
43.92
44.59
45.22
45.80
46.35
46.84
47.30
47.70
48.06
48.38
48.64
48.85
49.01
49.12
49.18
49.18
49.13
2.36
4.42
6.37
8.24
10.05
11.81
13.52
15.20
16.84
18.45
20.02
21.56
23.06
24.54
25.98
27.39
28.76
30.10
31.41
32.68
33.92
35.12
36.29
37.41
38.50
39.55
40.56
41.53
42.46
43.34
44.18
44.98
45.72
46.43
47.08
47.68
48.24
48.74
49.19
49.59
49.94
50.22
50.46
50.63
50.74
2.51
4.71
6.79
8.78
10.71
12.59
14.42
16.21
17.96
19.67
21.34
22.98
24.58
26.14
27.67
29.16
30.61
32.02
33.40
34.74
36.03
37.29
38.50
39.67
40.80
41.88
42.91
43.90
44.84
45.73
46.56
47.35
48.08
48.76
49.38
49.95
50.45
50.90
51.29
51.61
51.87
52.07
52.20
52.26
52.25
2.71
5.07
7.31
9.46
11.54
13.56
15.53
17.46
19.34
21.18
22.97
24.73
26.44
28.11
29.74
31.33
32.87
34.37
35.83
37.24
38.60
39.91
41.18
42.39
43.55
44.66
45.71
46.71
47.64
48.52
49.34
50.10
50.79
51.42
51.98
52.47
52.89
53.24
53.52
53.73
3.08
5.79
8.34
10.80
13.18
15.49
17.73
19.93
22.06
24.15
26.18
28.16
30.09
31.96
33.78
35.55
37.26
38.90
40.49
42.02
43.48
44.88
46.21
47.47
48.66
49.78
50.82
51.78
52.67
53.47
54.19
54.82
55.36
55.81
56.17
56.44
56.61
56.67
56.64
56.50
VB
Where v > 30 m/s,
please consult our
Applications Engineering
Department
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
0.23
0.31
0.47
0.01
0.01
0.02
0.03
0.03
0.04
0.05
0.05
0.06
0.06
0.07
0.08
0.08
0.09
0.10
0.10
0.11
0.12
0.12
0.13
0.14
0.14
0.15
0.16
0.16
0.17
0.18
0.18
0.19
0.19
0.20
0.21
0.21
0.22
0.23
0.23
0.24
0.25
0.25
0.26
0.27
0.27
0.28
0.29
0.29
0.30
0.31
0.31
0.32
0.32
0.33
0.34
0.34
0.35
0.36
0.36
0.37
0.38
0.38
0.39
0.40
0.40
0.41
0.42
0.42
0.43
0.44
0.44
0.45
0.45
1.14
1.54
2.36
0.03
0.06
0.10
0.13
0.16
0.19
0.23
0.26
0.29
0.32
0.36
0.39
0.42
0.45
0.49
0.52
0.55
0.58
0.62
0.65
0.68
0.71
0.75
0.78
0.81
0.84
0.88
0.91
0.94
0.97
1.01
1.04
1.07
1.10
1.14
1.17
1.20
1.23
1.27
1.30
1.33
1.36
1.40
1.43
1.46
1.49
1.53
1.56
1.59
1.62
1.66
1.69
1.72
1.75
1.79
1.82
1.85
1.88
1.92
1.95
1.98
2.01
2.05
2.08
2.11
2.14
2.18
2.21
2.24
2.27
power (kW)
speed ratio i
1,27 >1,57
to
1,57
1.82
2.47
3.77
0.05
0.10
0.16
0.21
0.26
0.31
0.36
0.42
0.47
0.52
0.57
0.62
0.68
0.73
0.78
0.83
0.88
0.94
0.99
1.04
1.09
1.14
1.20
1.25
1.30
1.35
1.40
1.46
1.51
1.56
1.61
1.66
1.72
1.77
1.82
1.87
1.92
1.98
2.03
2.08
2.13
2.18
2.24
2.29
2.34
2.39
2.44
2.50
2.55
2.60
2.65
2.70
2.76
2.81
2.86
2.91
2.96
3.02
3.07
3.12
3.17
3.22
3.28
3.33
3.38
3.43
3.48
3.53
3.59
3.64
2.05
2.78
4.24
0.06
0.12
0.18
0.23
0.29
0.35
0.41
0.47
0.53
0.58
0.64
0.70
0.76
0.82
0.88
0.94
0.99
1.05
1.11
1.17
1.23
1.29
1.34
1.40
1.46
1.52
1.58
1.64
1.69
1.75
1.81
1.87
1.93
1.99
2.05
2.10
2.16
2.22
2.28
2.34
2.40
2.45
2.51
2.57
2.63
2.69
2.75
2.81
2.86
2.92
2.98
3.04
3.10
3.16
3.21
3.27
3.33
3.39
3.45
3.51
3.56
3.62
3.68
3.74
3.80
3.86
3.92
3.97
4.03
4.09
v (m/s)
Dynamically balanced (for details see DIN 2211)
Pulleys
109
Power Ratings
Section E/40
Nominal Power Rating PN (kW) for β = 180° and Ld = 7180 mm
Statically balanced
v (m/s)
Pulleys
Table 54
nk
Datum diameter of small pulley ddk (mm)
(min-1)
450
500
560
630
670
710
750
800
850
900
950
1000
700
950
1450
20
40
60
80
100
120
140
160
180
200
220
240
260
280
300
320
340
360
380
400
420
440
460
480
500
520
540
560
580
600
620
640
660
680
700
720
740
760
780
800
820
840
860
880
900
920
940
960
980
1000
1020
1040
1060
1080
1100
1120
1140
1160
1180
1200
1220
1240
1260
1280
1300
26.44
29.78
24.24
1.47
2.70
3.83
4.90
5.92
6.91
7.87
8.80
9.70
10.58
11.43
12.27
13.08
13.88
14.66
15.42
16.16
16.88
17.59
18.28
18.95
19.60
20.24
20.86
21.46
22.04
22.61
23.15
23.68
24.19
24.68
25.15
25.60
26.03
26.44
26.84
27.21
27.56
27.89
28.19
28.48
28.74
28.98
29.20
29.39
29.57
29.71
29.84
29.93
30.01
30.06
30.08
30.07
30.04
29.99
29.90
29.79
29.65
29.48
29.29
29.06
28.80
28.52
28.20
27.86
31.70
35.30
26.19
1.72
3.17
4.52
5.80
7.03
8.21
9.36
10.48
11.57
12.63
13.66
14.67
15.66
16.62
17.56
18.48
19.38
20.26
21.11
21.94
22.76
23.54
24.31
25.06
25.78
26.48
27.16
27.81
28.44
29.04
29.63
30.18
30.71
31.22
31.70
32.15
32.57
32.97
33.34
33.68
34.00
34.28
34.54
34.76
34.95
35.11
35.24
35.34
35.41
35.44
35.44
35.40
35.33
35.22
35.08
34.90
34.68
34.43
34.14
33.81
33.44
33.03
32.58
32.09
31.55
37.57
40.95
25.31
2.02
3.74
5.34
6.87
8.34
9.76
11.13
12.47
13.78
15.05
16.29
17.51
18.69
19.85
20.98
22.09
23.16
24.21
25.23
26.23
27.19
28.13
29.04
29.92
30.78
31.60
32.39
33.15
33.88
34.58
35.24
35.88
36.47
37.04
37.57
38.06
38.52
38.94
39.32
39.66
39.97
40.23
40.46
40.64
40.78
40.88
40.94
40.95
40.91
40.83
40.71
40.53
40.31
40.04
39.72
39.35
38.93
38.46
37.93
37.36
43.78
46.07
19.38
2.37
4.40
6.29
8.10
9.85
11.53
13.17
14.77
16.32
17.84
19.32
20.76
22.17
23.54
24.88
26.19
27.46
28.70
29.90
31.06
32.19
33.29
34.34
35.36
36.33
37.27
38.17
39.03
39.84
40.61
41.34
42.02
42.65
43.24
43.78
44.27
44.71
45.10
45.44
45.73
45.96
46.13
46.25
46.32
46.32
46.27
46.15
45.98
45.74
45.43
45.07
44.63
44.13
43.56
42.93
47.00
48.23
49.97
49.80
52.68
50.75
55.67
51.00
58.21
50.17
60.27
48.20
61.83
45.02
62.87
2.57
4.77
6.83
8.80
10.70
12.54
14.33
16.06
17.76
19.41
21.02
22.59
24.12
25.62
27.07
28.49
29.86
31.20
32.49
33.75
34.96
36.13
37.26
38.34
39.37
40.36
41.31
42.20
43.04
43.84
44.58
45.27
45.90
46.48
47.00
47.47
47.87
48.22
48.50
48.72
48.87
48.96
48.99
48.94
48.83
2.76
5.14
7.37
9.50
11.55
13.54
15.47
17.35
19.18
20.97
22.71
24.40
26.05
27.66
29.23
30.75
32.22
33.65
35.04
36.37
37.66
38.90
40.09
41.23
42.31
43.34
44.32
45.24
46.10
46.90
47.64
48.32
48.94
49.49
49.97
50.39
50.73
51.01
51.21
51.34
51.40
51.38
51.27
51.09
50.83
2.96
5.51
7.90
10.19
12.40
14.53
16.61
18.63
20.59
22.51
24.37
26.19
27.96
29.68
31.35
32.97
34.54
36.06
37.52
38.93
40.29
41.59
42.83
44.02
45.14
46.20
47.20
48.13
48.99
49.79
50.51
51.17
51.75
52.25
52.68
53.02
53.29
53.47
53.57
53.59
3.20
5.97
8.57
11.05
13.44
15.77
18.02
20.21
22.34
24.42
26.44
28.40
30.31
32.16
33.96
35.70
37.38
39.00
40.55
42.05
43.48
44.84
46.14
47.37
48.52
49.60
50.60
51.53
52.38
53.14
53.83
54.42
54.93
55.34
55.67
55.90
56.03
56.06
55.99
55.82
3.44
6.42
9.22
11.90
14.49
16.99
19.42
21.78
24.07
26.30
28.47
30.58
32.62
34.60
36.52
38.37
40.15
41.86
43.50
45.06
46.55
47.97
49.30
50.55
51.72
52.80
53.79
54.69
55.50
56.21
56.81
57.32
57.72
58.02
58.21
3.68
6.88
9.88
12.75
15.52
18.20
20.80
23.33
25.79
28.17
30.48
32.73
34.90
37.00
39.02
40.97
42.85
44.64
46.35
47.97
49.51
50.96
52.31
53.57
54.73
55.79
56.75
57.60
58.33
58.96
59.46
59.85
60.12
60.26
60.27
3.92
7.33
10.53
13.60
16.55
19.41
22.18
24.87
27.48
30.01
32.47
34.84
37.14
39.35
41.48
43.52
45.48
47.34
49.10
50.77
52.34
53.81
55.17
56.42
57.55
58.57
59.46
60.23
60.87
61.39
61.76
62.00
62.09
62.04
61.83
4.16
7.78
11.18
14.43
17.57
20.60
23.54
26.39
29.16
31.83
34.42
36.93
39.34
41.66
43.88
46.01
48.03
49.95
51.76
53.47
55.05
56.52
57.86
59.08
60.16
61.11
61.92
62.59
63.11
63.48
VB
Additional
per belt for
1,01 1,06
to
to
1,05 1,26
0.38
0.52
0.79
0.01
0.02
0.03
0.04
0.05
0.07
0.08
0.09
0.10
0.11
0.12
0.13
0.14
0.15
0.16
0.18
0.19
0.20
0.21
0.22
0.23
0.24
0.25
0.26
0.27
0.28
0.30
0.31
0.32
0.33
0.34
0.35
0.36
0.37
0.38
0.39
0.41
0.42
0.43
0.44
0.45
0.46
0.47
0.48
0.49
0.50
0.51
0.53
0.54
0.55
0.56
0.57
0.58
0.59
0.60
0.61
0.62
0.64
0.65
0.66
0.67
0.68
0.69
0.70
0.71
1.92
2.60
3.97
0.05
0.11
0.16
0.22
0.27
0.33
0.38
0.44
0.49
0.55
0.60
0.66
0.71
0.77
0.82
0.88
0.93
0.99
1.04
1.09
1.15
1.20
1.26
1.31
1.37
1.42
1.48
1.53
1.59
1.64
1.70
1.75
1.81
1.86
1.92
1.97
2.03
2.08
2.14
2.19
2.24
2.30
2.35
2.41
2.46
2.52
2.57
2.63
2.68
2.74
2.79
2.85
2.90
2.96
3.01
3.07
3.12
3.18
3.23
3.28
3.34
3.39
3.45
3.50
3.56
power (kW)
speed ratio i
1,27 >1,57
to
1,57
3.07
4.16
6.35
0.09
0.18
0.26
0.35
0.44
0.53
0.61
0.70
0.79
0.88
0.96
1.05
1.14
1.23
1.31
1.40
1.49
1.58
1.66
1.75
1.84
1.93
2.02
2.10
2.19
2.28
2.37
2.45
2.54
2.63
2.72
2.80
2.89
2.98
3.07
3.15
3.24
3.33
3.42
3.50
3.59
3.68
3.77
3.86
3.94
4.03
4.12
4.21
4.29
4.38
4.47
4.56
4.64
4.73
4.82
4.91
4.99
5.08
5.17
5.26
5.34
5.43
5.52
5.61
5.70
Where v > 30 m/s,
please consult our
Applications Engineering
Department
v (m/s)
Dynamically balanced (for details see DIN 2211)
110
Pulleys
3.45
4.68
7.14
0.10
0.20
0.30
0.39
0.49
0.59
0.69
0.79
0.89
0.98
1.08
1.18
1.28
1.38
1.48
1.58
1.67
1.77
1.87
1.97
2.07
2.17
2.27
2.36
2.46
2.56
2.66
2.76
2.86
2.95
3.05
3.15
3.25
3.35
3.45
3.55
3.64
3.74
3.84
3.94
4.04
4.14
4.24
4.33
4.43
4.53
4.63
4.73
4.83
4.92
5.02
5.12
5.22
5.32
5.42
5.52
5.61
5.71
5.81
5.91
6.01
6.11
6.21
6.30
6.40
Special Drives
V-Flat Drives
The V-flat drive comprises one grooved pulley and one flat pulley.
This type of power transmission can, under certain conditions, be
used for drives with intermittent loading or with a large moment of
inertia. As flywheels or flat pulleys are often already present, the
costs of the drive can be reduced. When converting a flat belt drive
to a V-flat drive, it will usually be economic to continue to use the
flat pulley.
a
b
bu
b2
Da
DZ
=
=
=
=
=
=
da
dd
Fl
f
=
=
=
=
h
i
Lath
Ldth
pf
P
Sn
α
kf
=
=
=
=
=
=
=
=
=
drive centre distance
(mm)
face width of the flat pulley
(mm)
bottom width of the belt
(mm)
face width of the grooved pulley
(mm)
outside diameter of the flat pulley
(mm)
correction factor for determination of the
theoretical diameter
(mm)
outside diameter of the grooved pulley
(mm)
datum diameter of the grooved pulley
(mm)
area of the V-belt on the flat pulley
(cm2)
correction factor for calculating the face
width of the flat pulley
(mm)
height of crown per 100 mm pulley face width
(mm)
speed ratio
calculated outside length of the Kraftband
(mm)
calculated datum length of the V-belt
(mm)
specific surface pressure
(N/cm2)
power to be transmitted by the belt drive
(kW)
circumferential force
(N)
arc of contact on the flat pulley = 360° - β
(degrees)
factor
Datum length Ld
pitch length Lw
dd
Da
a
111
Special Drives
V-Flat Drives
Table 55: Arc of contact factor c1 (for V-flat belt drives only)
Calculating V-Flat Drives
The calculation of a V-flat drive uses the same method as the one
set out on pages 78 to 80. In order to ensure reliability and
efficiency, the V-flat belt drive must fulfil the following requirements:
kf =
0
0.07
0.15
0.22
0.29
0.35
0.40
0.45
0.50
0.57
0.64
0.70
0.75
0.80
0.85
0.92
1.00
1.07
1.15
1.21
1.30
1.36
1.45
● The V-grooved pulley must always be the small pulley.
● When using single belts, only classical V-belts sections Z/10,
A/13, B/17, C/22, D/32, E/40 must be used.
● Wedge belts must never be used as their narrow base and
larger relative height tends to make them turn on their sides and
twist.
● All Optibelt KB Kraftbands – both with wedge belts or classical
V-belts – are particularly suitable for this type of drive due to their
single-belt-characteristic. Turning over even under extreme
shock load conditions is prevented.
● V-flat drives are particularly economical when
kf =
Da – d d
a
lies between 0.5 and 1.15
The ideal drive dimensioning is achieved when kf = 0.85. If the
kf-factor falls outside the recommended range, it is more
economic to specify a normal V-belt drive.
● The following recommendations are made based on the above
requirements:
Ratio
Drive
centre
distance
Classiscal
V-belts
Kraftbands
D + DZ
i= a
≥3
dd
D + DZ
i= a
≥3
da
azul ≥ Da
azul ≥ Da
Da – dd
a
β=
c1
180°
176°
170°
167°
163°
163°
156°
153°
150°
146°
143°
140°
137°
134°
130°
125°
120°
115°
110°
106°
100°
96°
90°
0.75
0.76
0.77
0.79
0.79
0.79
0.81
0.81
0.82
0.83
0.84
0.85
0.85
0.86
0.86
0.84
0.82
0.80
0.78
0.77
0.73
0.72
0.70
● For classical V-belts, the length is calculated using the datum
length Ld and for Kraftbands using the outside length La.
Therefore, the correction factor Dz must be added to the outside
diameter of the flat pulley in order to arrive at the theoretical
design diameter.
Correction Factor Dz for Determination of the
Theoretical Design Diameter
Classical V-belts
Section
Profil Z/10
DZ
(mm)
7
A/13
B/17
C/22
D/32
E/40
10
13
18
23
25
Kraftbands
a=
Da – d d
0.85
a=
D a – da
0.85
kf =
Da – d d
a
kf =
D a – da
a
K factor
0.5 ≤ kfzul ≤ 1.15
3V/ 5V/ 8V/
A/
Section
SPZ SPA SPB SPC
Profil
9J
15J
25J
HA
B/
HB
C/
HC
D/
HD
DZ
13
(mm)
23
41
12
20
24
35
12
15
19
Calculating the Datum Length for Classical V-Belts
Ldth 2a + 1.57 (dd + Da + DZ) +
(Da + DZ – dd)2
4a
Calculating the Outside Length for Kraftbands
Lath ≈ 2a + 1.57 (da + Da + DZ) +
● When calculating the number of belts and the belt tension, it
should be noted that a special arc of contact factor c1 must be
used as shown in the following table.
112
26
(Da + DZ – da)2
4a
Length conversion factors are given on pages 145/146. Datum
length Ld = datum length Lw.
Special Drives
V-Flat Drives
● The flat pulley should be cylindrical in shape. With existing flat
pulleys that are to be re-used for a V-flat belt drive, the height of
the crown should be checked.
The following conditions must be met:
Maximum Crown Height
hmax = 1 mm pro 100 mm pulley face width
h=
Da – d a
2
(h < hmax)
In addition, the pulley face width must be calculated or checked as
shown in the following example:
Solution:
b = b2 + f
b = 120 + 35 = 155 mm
da
Da
Given/calculated:
V-Grooved pulley
6 grooves
Section
B/17
Drive centre distance a 850 mm
b2 for classical V-belts, page 41, table 8
b2 for Kraftbands, page 45, table 14
f from table 56.
Choose a standard flat pulley with face width b = 160 mm.
Table 56: Factor f for determining the face width of the flat pulley
Z/10, SPZ, A/13/HA,
3V/9J
SPB 5V/15J
C/22/HC, SPC
D/32/HD, 8V/25J
E/40
a
f
a
f
a
f
a
f
a
f
< 500
20
< 750
25
< 1000
30
< 1250
40
< 1750
45
500-750
25
750-1000
35
1000-1250
40
1250-1750
50
1750-2250
60
> 750
30
> 1000
40
> 1250
50
> 1750
65
> 2250
75
Calculation of the specific surface pressurepulley
Calculation the effective belt tension Sn (N)
Sn =
P · 1000
v
Area of belt contact on flat pulley Fl (cm2)
Fl =
D a · π · α · bu · z
36 000
Formula:
Calculating the static belt tension for
V-flat belt drives T (N)
T=
500 · (2.25 – c1) · PB
+ k · v2
c1 · z · v
Surface pressure on flat pulley pf (N/cm2)*
pf =
Sn
Fl
Recommended surface pressure pf (N/cm2)*
pf ≤ 4 N/cm2*
* 10 N/cm2 = 1 bar = 105 Pascal
In addition to the calculation method set out on pages
78 to 80, the static belt tension for V-flat belt drives
must be calculated according to the formulae shown
here.
113
Special Drives
Tension / Guide Idlers
Idlers are grooved or flat pulleys that do not transmit any power in
a drive system. As they also generate additional bending stresses
in the belt, they should be employed sparingly and, where
possible, confined to the following situations:
Idler Configuration
● with fixed drive centres, in order to produce the required tension
and to take up the maximum possible belt stretch and wear
Unless design requirements call for an outside idler, the inside idler
is usually more advantageous. Its diameter can be kept smaller
than that of the outside idler.
● as damping and guide idlers on very long, unsupported spans.
Belts on such drives tend to vibrate more than normal and even
to turn over in the pulley grooves
Depending upon the type of belt, inside idlers can either take the
form of a grooved or flat pulley.
● as outside idlers where the arc of contact on one of the loaded
pulleys is too low. Their inclusion increases the arc of contact
and often reduces excessive slip or eliminates the need to
increase the number of belts,
● as guide idlers on drives where the pulleys are not all on the
same plane such as quarter turn drives
In principle, idlers can be used internally or externally depending
upon the drive situation.
Table 57: Section dimensions
Belt type
Grooved
pulley
Flat
pulley
High-performance wedge belts
DIN 7753 Part 1
SPZ; SPA; SPB; SPC
●
● as pneumatically, hydraulically or spring loaded idlers to
maintain an even, constant tension.
High-performance wedge belts
USA Standard RMA/MPTA
3V/9N; 5V/15N; 8V/25N
●
● as clutching idlers with which the driven pulley can be engaged
or disengaged. Complex clutches are no longer required.
Because of their single belt characteristics, Optibelt KB Kraftbands are particularly suited to these applications.
Classical V-belts DIN 2215
Z/10; A/13; B/17; 20; C/22; 25;
D/32; E/40
●
●
Kraftbands with high-performance
wedge belts
3V/9J; 5V/15J; 8V/25J; SPA; SPZ; SPB; SPC
●
●
Kraftbands with
classical V-belts
A/HA; B/HB; C/HC; D/HD
●
●
● to guide belts past obstructions,
If, for the reasons listed above, it is absolutely essential to employ
idlers, the following criteria must be observed when designing the
drive:
● idler configuration,
● position of the idler in the belt span,
● idler diameter,
● idler shape,
● allowance for idler travel for fitting and for initial and subsequent tensioning of the belt,
● correction of the power rating PN
For raw-edge V-belts and Kraftbands the same requirements as in
table 57 are valid.
Inside idlers reduce the arc of contact on the loaded pulleys and
with it the arc of contact correction factor c1. When calculating the
number of belts, the arc of contact correction factor should be
selected for the position of the idler at the point of maximum belt
stretch (See Table 58, page 116).
Outside idlers must always take the form of flat pulleys as they
run on the back of the belt. They increase the arc of contact. Care
must be taken to ensure however that the maximum possible belt
stretch is taken up and that contact with the opposite span is
prevented. The reverse bending caused when outside idlers are
used can lead to a reduction of the belt service life.
Special V-belt constructions upon request!
114
Special Drives
Tension / Guide Idlers
Position of the Idler in the Belt Span
Fig. 3
Theoretical power transmission formulae and indeed practice has
shown that idlers should, wherever possible, be placed in the slack
side of the drive. The tension idler force can then be very
significantly reduced. A spring loaded idler must not be employed
in a reversing drive as the slack and tight sides of the drive are
constantly changing.
flat pulley
sla
ck
sid
e
Our Applications Engineering Department will be pleased to assist
in the design where spring loaded idlers present special problems.
tight side
as far as possible
Fig. 1
slack side
On drives with long belt spans grooved pulleys are the preferred
choice for inside idlers because with flat pulleys transverse vibrations and belt turnover can occur.
Minimum Diameter for Inside Idlers
Inside idler ≥ smallest loaded pulley in the drive system or
smallest permissible pulley diameter for the
section used.
tight side
Minimum Diameter for Outside Idlers
Outside idler ≥ 1.35 times the smallest loaded pulley in the
drive system.
Grooved pulleys can be used as inside idlers anywhere on the slack
side. Where possible, however, the arc of contact should be the
same on both pulleys when the idler reaches its limit position, i.e.
belt stretch is at its maximum.
Fig. 2
sla
ck
sid
e
Exceptions:
Section
Diameter of the
smallest loaded
pulley in the drive
(mm)
Minimum diameter
of the outside idler
(mm)
Z/10
56 – 63
90
A/13
71 – 90
125
SPZ, 3V/9N
63 – 90
125
SPA
90 – 112
150
The belt service life is significantly reduced if the minimum
recommended idler diameter is less than the size recommended.
tight side
Idler Design
Grooved pulleys which are used as idlers can normally have
standard groove dimensions. On drives subject to severe vibration
and with long drive centre distances, it is recommended that deep
grooved pulleys be employed.
Flat pulleys, whether used as inside or outside idlers, are to be
placed as far as possible away from the grooved pulley on to which
the belt runs next. Any alignment errors between the idler and the
pulley and the resultant sideways movement of the belt on the pulley
are thus avoided.
Flat pulleys should, where possible, be cylindrical and not crowned. Flanged pulleys are recommended as belt guides. The corners
formed by the contact surface and pulley flange should be sharp.
Round edges encourage the belt to run up on the flanges causing
turn over.
115
Special Drives
Tension / Guide Idlers
The face width or the contact surface between the two flanges is
calculated as follows:
b = b2 + m
b = face width / contact surface
b2 = face width of the grooved pulley
m = additional value
Section
(mm)
(mm)
(mm)
Additional value m (mm)
SPZ, 3V/9N, Z/10
SPA, A/13
SPB, 5V/15N, B/17
SPC, C/22
8V/25N
D/32
E/40
15
20
25
30
35
40
45
also applies for raw edge V-belts
Drive Calculation
Calculating the length and determining the number of belts is
basically the same as for two pulley drives. Certain details are,
however, to be noted:
1. Calculate the belt length over two pulleys using the formula: see
notes on standards page 66, 152/153.
Ldth ≈ 2a + 1.57 (ddg + ddk) +
The application of idlers increases the bending stress in the belts.
To avoid a reduction in belt service life, the idler correction factor
c4 must also be included in the calculation. This correction factor
takes the number of idlers into consideration whilst maintaining the
minimum diameter.
Table 58
Number of idlers
c4
0
1
2
3
1.00
0.91
0.86
0.81
The nominal power rating PN per belt is, as before, based on the
smallest loaded pulley. Calculation of the arc of contact correction
factor c1 must be based on the smallest contact angle of the loaded
pulley which occurs when the belt is stretched to its maximum limit.
Table 59: Arc of contact correction factor c1
β=
c1
β=
c1
75°
80°
85°
90°
95°
0.82
0.84
0.86
0.88
0.90
175°
180°
185°
190°
195°
1.00
1.00
1.00
1.00
1.01
100°
105°
110°
115°
120°
0.91
0.92
0.93
0.94
0.95
200°
205°
210°
215°
220°
1.01
1.01
1.01
1.01
1.01
125°
130°
135°
140°
145°
0.96
0.96
0.97
0.97
0.98
225°
230°
240°
250°
1.01
1.01
1.02
1.02
150°
155°
160°
165°
170°
0.98
0.99
0.99
0.99
1.00
(ddg - ddk)2
4a
2. If the belt has to be fitted with a fixed drive centre distance,
double the adjustment ”y” must be added to the belt length Ldth
(see pages 75/ 76).
Ld = Ldth + 2 y
3. The next largest standard length LdSt should then be selected. A
check should be made, usually on the drawing, to determine
whether the belt can be adequately tensioned with the idler in
the outermost position. In this idler position, both the standard
length LdSt and double the adjustment ”x” must be taken up (see
pages 75/76).
Ld for idler end position = LdSt + 2 x
Fig. 4
Tension idler position
after maximum
belt stretch
Number of Belts
with standard
belt length
The following formula for determining the number of belts is
obtained using the idler correction factor c4:
z=
fixed drive
centre distance
116
P · c2
P N · c 1 · c 3 · c4
Special Drives
Twist Drives
Drives in which the belt run is transposed are often simply termed
”twist” drives. These can be drives where the shafts are not parallel,
whose pulleys and idlers are not all arranged on one plane, or
drives with two parallel but counter rotating shafts. Because of the
twisting of the belt, this type of drive requires a certain degree of
lateral bending flexibility. The cross section of the V-belt is better
suited for this purpose than the flat belt. In most applications twist
drives use only single V-belts, but drives using belt sets are possible.
The crossing of the belt spans and the non-aligned entry of the belt
into the pulley leads to a reduction of the belt service life. The entry
and exit angle between the belt and the pulley plane should not be
more than 5°. The required inclination of the shafts and the pulleys
relative to each other and the belt entry and exit angles should be
confirmed by practical tests. In addition, certain critical drives may
have a considerably improved safety factor if Optibelt special
constructions are used.
The most important types of twist drives and the associated design
guidelines are illustrated in the following text.
Quarter Twist Drive
The term quarter twist drive is used to describe systems where the
shafts are at a 90° angle to each other.
Where this is not possible, a two stage drive should be employed,
in which one stage takes the form of a standard V-belt drive.
The ratio i or 1:i on quarter twist drives should not be greater than
2.5.
Quarter Twist Drive Ratio i or 1: i < 2.5
Quarter Twist Drive Ratio i or 1: i > 2.5
117
Special Drives
Twist Drives
Design guidelines for quarter twist drives
Plan view
Horizontal shaft
Vertical shaft
Elevation
Tight side
Horizontal shaft
1.
4. The direction of rotation must be arranged so that the tight side
S1 is at the bottom.
amin = 5.5 (ddg + b2)
2. The drive must be aligned so that a straight line drawn through
the centre of the vertical shaft runs through the centre of the face
b2 of the pulley on the horizontal shaft (plan). The horizontal
shaft must be at right angles to this straight line.
3. The horizontal centre line of the pulley on the horizontal shaft
must be above and at a distance y1 from the centre line of the
pulley on the vertical shaft (elevation). The distance y1 changes
with the drive centre distance ‘a’.
Drive centre
distance a
(mm)
y1 (mm)
Classical
V-belts
y1 (mm)
Wedge
belts
>
>
>
>
1200
1500
2000
2500
3000
≤
≤
≤
≤
≤
1500
2000
2500
3000
3500
5
8
12
17
25
–
5
8
10
15
>
>
>
>
>
3500
4000
4500
5000
5500
≤
≤
≤
≤
≤
4000
4500
5000
5500
6000
35
45
55
65
80
25
30
40
45
55
100
65
118
5. Deep grooved pulleys should be specified where possible for
single belt drives. This ensures an improved entry and exit of the
belt, thus preventing turnover.
6. Never specify deep grooved pulleys when using Kraftbands.
Kraftband pulleys should always be used. We recommend, in
any case, that our Applications Department be consulted.
7. When calculating the number of belts, the example given on
pages 78 to 80 should be followed. An arc of contact correction
factor c1 = 1 must always be used.
8. The static belt tension ‘T’ should be calculated using the formula
on page 113.
Table 60
> 6000
Vertical shaft
9. The drive centre distance must be adjustable so that the belt can
be fitted without force, the necessary tension applied, and the
belt stretch and wear taken up during its service life.
Special Drives
Twist Drives
Eighth twist drives
Design guidelines
Eighth twist drives are seldom required. The shafts in this drive
system are at an angle of 45° relative to each other.
1.
amin = 4 (ddg + b2)
2. Otherwise the design guidelines for quarter twist drives are
applicable.
Drives with 180° twist
The drive and the driven shafts are, as with conventional drives,
parallel to each other. The belt is twisted through 180° so that both
Minim
spans cross. A change in direction is thus achieved at very little
cost.
th
n leng
um spa
L min
Design guidelines
Table 61
Section
SPZ, 3V/9N
SPA
SPB, 5V/15N
SPC
8V/25N
A/13
B/17
C/22
D/32
E/40
Minimum span length Lmin
(mm)
350
400
450
600
700
460
560
720
940
1150
2. As far as possible, the crossover point of the belt should be
arranged in the centre of the belt spans. The rubbing of the belt
spans against each other is at a minimum at this point. In order
to avoid contact completely, it is recommended that a guide
pulley be placed in the slack side S2 near the crossover point.
3. Length calculation
L ≈ 2a + 1,57 (dg + dk) +
(dg + dk)2
4a
4. Otherwise the design guidelines as detailed in points 4 to 9 for
quarter twist drives are applicable.
▲
1. In order to guarantee the perfect running of the belts in the pulley
grooves, the belt span length used must not be less than the
minimum set out in the following table.
these values also apply for raw edge belts
119
Special Drives
optibelt Drive Belts with Aramid Tension Cord
Aramid is an organic polyamide fibre that is manufactured by a
complex chemical process. It is to be used wherever maximum
stress and reliability is required. The processing of this fibre
requires the highest level of experience and know-how as well as
sophisticated testing facilities. Aramid is used as the tension cord
material for highly loaded V-belts and Kraftbands.
The advantages of Optibelt V-belts and Kraftbands that use Aramid
tension cords are of special benefit where
● high power transmission levels are called for
● there are limitations on the drive width
● tthe adjustment available for tensioning is minimal
Construction and Properties
Compared to materials customarily used for tension cords e.g.
polyesters, Aramid is noted for its extremely low stretch properties.
Its tensile strength is almost double that for the same thickness of
standard fibre.
Polyester
Aramid
Applications
Tensile
strength
(cN/tex)
Total
extension at
fracture
(%)
Tension
2%
(cN/tex)
81
190
14
4
15
73
● the drive is exposed to high temperatures.
Thus, with the same number of belts and unchanged drive parameters, significantly higher power levels can be transmitted without
reducing the service life of the belts. Even drive designs that have
previously had to be classified as critical may now be considered
as risk free. Service factors are improved; minimal belt stretch
results in virtually maintenance free running.
For these reasons that Optibelt V-belts and Kraftbands with Aramid
tension cord are to be found on drives with exceptional loading
requirements ● on critical drives in industrial engineering applications,
● on special machines,
● on agricultural machinery and
cN = centiNewton
Fibre weight: 1 tex = 1 g/1000 m
Despite its extreme stability, this fibre is remarkably flexible and
possesses sufficient elasticity to absorb shock loading or vibration.
These properties, which are of special importance for V-belts and
Kraftbands, result in huge improvements in comparison to conventional constructions.
Optibelt V-belts in Aramid cord construction comprise:
● on horticultural machinery.
Optibelt drive belts using Aramid tension cords may reduce the
costs of the total drive, as there is a saving in both weight and
volume due to the reduced installation width. They are oil resistant,
and heat resistant up to approx. 100 °C, and dust protected, as
standard.
A discussion of all the relevant criteria would be beyond the scope
of this manual. We therefore recommend that you contact our
Applications Engineering Department to discuss your specific
problems.
Fibre reinforced filler
compound
Belt surface
Aramid tension cord
Aramid tension cord
Bedding compound
Bedding compound
Base compound
Fibre reinforced base
compound
Fabric cover
The high grade, specially processed Aramid tension cord is
embedded in a rubber compound. It is effectively supported by a
filler and base of polychloroprene and natural rubber compounds
containing transversely arranged fibres. The fabric cover is treated
on both sides with a rubber compound and completely envelops
the V-belt.
Moulded cog
Special applications can also be designed with raw edge V-belts
and Kraftbands employing Aramid tension cords.
Drive Calculation
Calculation must follow the example given on
pages 78 to 80.
Please ask for the details of the higher power ratings.
120
Special Drives
optibelt Drive Belts with Aramid Tension Cord
Diagram 6
Diagram 7
Time/extension graph Belt size SPB 2000 Ld
Power rating graph Belt size SPA 2500 Ld
Datum diameter of the small pulley ddk = 200 mm
Speed ratio i > 1.57
Test arrangement
This diagram shows, in a direct comparison, the significantly higher power rating
of the Optibelt V-belt with the Aramid cord construction.
X
1600 N
Free drive centre
distance
d1/d2
n1
Brake load P
=180 mm
=1750 min-1
=15 kW
In this graph, the belt extension under load (drive centre distance increase) is
plotted against time, for both materials. After only one hour, the increase with
polyester is already several times that of Aramid.
Sections / Lengths
Raw edge and wrapped Optibelt V-belts and Kraftbands are
available with Aramid to BS/DIN/ISO and USA Standard RMA/
MPTA.
Because of Aramid’s special properties, belts for multi-grooved
drives must be ordered in sets as the set tolerance is matched to the
Aramid tension cord.
Lengths and minimum order quantities on request.
Datum length Ld
pitch length Lw; outside length = La
121
Design Hints
Belt Tension for optibelt V-Belts
The correct level of belt tension has a direct and crucial bearing on
the trouble free transmission of power and the achievement of
acceptable belt service life. Belt tension which is either too high or
too low often results in premature failure. Belts which are over
tensioned sometimes cause damage to the bearings on the driver
or driven units.
Experience has shown that the more common tensioning methods,
e.g. the ”thumb pressure method“ do not ensure tension settings
that would enable drives to be operated at optimum efficiency, It
is therefore recommended that the required static belt tension ’T‘ be
calculated for each drive using the Optibelt formulae. This tension
is the lowest possible required by a drive to transmit the highest
power level from the drive, taking account of the normal amount of
slip.
Once the belt has been fitted and the initial tension applied, it
should be checked using an Optibelt tension gauge. The belt
should be monitored regularly during the first few hours of
operation experience has shown that the first retensioning should
be undertaken after approximately 30 minutes to four hours
running under full load. This takes up the initial belt stretch and
”bedding in“ to the pulley grooves.
Span
2. Determine the belt deflection per 100 mm span length E from
the belt tension/deflection graphs Diagrams 8 to 11.
3. Calculate the belt deflection for a given span length Ea, for the
actual drive span length
Ea ≈
After approximately 24 hours of operation, it is often advisable to
check the drive and retension the belts if necessary, particularly
when not continuously run under full load. The time between checks
can then be significantly increased. Our installation and maintenance aids on page 130 - 132 should be observed.
An over or under tensioning of the drive will be avoided if the belt
tension is calculated, set and checked using one of the following
methods:
E·L
100
L = anom · sin
β
2
Apply the load to set belt tension T (taken from Diagrams 8 to
11 for the appropriate belt section) to the centre of, and
perpendicular to, the span, as shown in the illustration above.
Measure the deflection and if necessary adjust the centres until
the correct belt tension is achieved.
I. Checking the Belt Tension by Span Deflection
This method provides an indirect measurement of the calculated
or actual static belt tension. It is applicable for belt sections SPZ,
SPA, SPB, SPC, 3V/9N, 5V/15N, Z/10, A/13, B/17, 20,
C/22, 25, D/32, XPZ, XPA, XPB, XPC, 3VX, 5VX, ZX/X10,
AX/X13, BX/X17, CX/X22.
II. Checking Belt Tension by Speed Measurement
This method checks belt tension using the theoretical slip. The
speeds of the driver and the driven pulleys are measured first in
an unloaded condition and then under load.
E = belt deflection per 100 mm span length
(mm)
S
Ea = belt deflection for a given span length
(mm)
n1L = driver pulley speed, no load
(rpm)
(N)
n2L = driven pulley speed, no load
(rpm)
n1B = driver pulley speed, under load
(rpm)
n2B = driven pulley speed, under load
(rpm)
f = load used to set belt tension
k = constant for calculation of centrifugal force
L = drive span length
(mm)
Sa = minimum static shaft load
(N)
T = minimum static tension per belt
(N)
= slip
(%)
Formula for calculating the slip:
1. Calculate the static belt tension using the following formula:
S = (1 –
T≈
500 · (2,02 – c1) · PB
c1 · z · v
n1L/n2L
n1B/n2B
) · 100
+ k · v2
When first fitted, the belt should be tightened to 1.3 x T i.e 30%
higher than the calculated belt tension.
122
At the rated loading, the slip should not exceed 1 %. The belt
service life is considerably shortened due to excessive flank
wear and over heating when tension is too low and slip ensues
underload.
Design Hints
Belt Tension for optibelt V-Belts and Kraftbands
Belt deflection per 100 mm span length E (mm)
Diagram 8: Belt tension graphs for Optibelt-SK wedge belts to BS 3790 and DIN 7753 Part 1
Section
k
f (N)
SPZ. 3V/9N
SPA
SPB. 5V/15N
SPC
0.07
0.12
0.19
0.37
25
50
75
125
Section
k
f (N)
Z/10
A/13
B/17
20
C/22
25
D/32
0.06
0.11
0.20
0.27
0.33
0.42
0.67
15
25
50
75
100
125
150
Minimum static belt tension T (N)
Belt deflection per 100 mm span length E (mm)
Diagram 9: Belt tension graphs for Optibelt-VB classical V-belts to BS 3790 and DIN 2215
Minimum static belt tension T (N)
123
Design Hints
Belt Tension for optibelt V-Belts and Kraftbands
Belt deflection per 100 mm span length E (mm)
Diagram 10: Belt tension graphs for Optibelt Super TX M=S wedge belts – raw edge, moulded cogged –
Section
k
f (N)
XPZ. 3VX
XPA
XPB. 5VX
XPC
0.06
0.11
0.18
0.34
25
50
75
125
Section
k
f (N)
ZX/X10
AX/X13
BX/X17
CX/X22
0.06
0.10
0.17
0.28
15
25
50
100
Minimum static belt tension T (N)
Belt deflection per 100 mm span length E (mm)
Diagram 11: Belt tension graphs for Optibelt Super TX M=S V-belts – raw edge, moulded cogged –
Minimum static belt tension T (N)
124
Design Hints
Belt Tension for optibelt V-Belts and optibelt KB Kraftbands
V. Belt Tensioning using a ”Length Additional Value”
It has become evident that span deflection methods are not ideal
for checking the tension of Kraftbands of all sections, and of
individual belts. The following, very simple method for the
setting and checking of belt tension is therefore recommended:
1. Calculate the static belt tension ‘T’.
T≈
500 · (2.02 – c1) · PB
c1 · z · v
+ k · v2
Example:
PB = 1136 kW
c1 = 0.97
v = 25.91 m/s
Drive arrangement with one set comprising:
2 Optibelt KB Kraftbands 4-8V 3750/25J 9525 La
2 Optibelt KB Kraftbands 5-8V 3750/25J 9525 La
T≈
500 · (2.02 – 0.97) · 1136
0.97 · 18 · 25.91
+ 0.69 · 25.912 = 1782 N
2. Measure the outside length ”M” of the Kraftband or the single
belt, whilst slack. The belt can be measured when fitted to the
drive provided that it is completely without tension.
3. Procedure
a) Fit the Kraftband or the single belt on to the pulleys.
Provisionally tighten the belt in order to seat it into the pulley
grooves.
b) Next completely slacken the Kraftband or the single belt.
c) Mark two lines on the top of the belt, distance ‘M’ apart.
The lines must be marked on the free span length, not
where the belt is on the pulleys (‘M’ should ideally be
1000 mm minimum or a multiple but in any case should
be as long as possible).
Important:
The longer the measured section, the more
accurate the tension setting will be.
Where ’M’ is 4000 mm
4. Calculate the length additional value ‘A’ using the formula
A=
M·R
1000
A=
4000 · 5,4
1000
= 21.6 mm
R = stretch factor from Table 62, page 126
5. Tighten the Kraftband or the single belt until the distance ‘M’ is
increased by the value ‘A’. The drive will now be correctly
tensioned.
Tighten the Kraftband until the lines marked on the top surface are
‘M’ plus the length additional value apart. This will set the correct
tension.
6. If the drive is to be retensioned, the belt must first be slackened
off again so that ‘M’ can be marked completely without tension.
The procedure described under paragraphs 3. to 5. above must
then be repeated.
When the belt is first installed the belt tension must be
multiplied by 1.3.
125
Design Hints
Belt Tension for optibelt V-Belts and optibelt KB Kraftbands
Table 62: Length addition per 1000 mm belt length
Section Kraftband
3V/9J
5V/15J
8V/25J
SPZ
SPA
SPB
SPC
A/HA
B/HB
C/HC
Single belt
3V/9N
5V/15N 8V/25N
SPZ
SPA
SPB
SPC
A/13
B/17
C/22
(mm)
(mm)
(mm)
(mm)
(mm)
(mm)
(mm)
Minimum static belt tension per rib/single belt T (N)
(mm)
(mm)
(mm)
50
75
100
125
150
0.8
1.2
1.6
2.1
2.6
0.8
1.2
1.6
2.1
2.6
0.8
1.0
1.3
1.6
1.9
0.8
1.0
1.3
1.6
1.9
0.8
175
200
225
250
275
3.0
3.5
4.0
4.5
4.9
3.0
3.5
4.0
4.5
4.9
2.2
2.5
2.8
3.0
3.3
2.2
2.5
2.8
3.0
3.3
0.9
1.1
1.2
1.4
1.5
300
350
400
450
500
5.3
6.4
7.6
8.7
10.0
5.3
6.4
7.6
8.7
10.0
3.6
4.2
4.7
5.3
5.8
3.6
4.2
4.7
5.3
5.8
1.6
1.8
2.0
2.2
2.5
1.6
1.8
2.1
2.3
2.5
2.7
3.0
3.2
3.5
4.2
2.7
2.9
3.1
3.4
3.8
4.8
5.3
4.2
4.7
5.1
5.5
1.3
1.7
2.0
2.4
2.7
1.3
1.7
2.0
2.4
2.7
550
600
650
700
800
3.1
3.4
3.8
4.1
4.8
3.1
3.4
3.8
4.1
4.8
2.0
2.2
2.4
2.8
900
1000
1100
1200
1300
5.5
6.2
6.9
7.6
8.3
2.9
3.3
5.5
6.2
6.9
7.6
8.3
3.3
3.7
4.1
4.5
5.0
1400
1500
1600
1700
1800
9.0
9.7
10.4
11.1
11.8
3.7
4.1
4.6
5.0
5.5
9.0
9.7
10.4
11.1
11.8
5.4
5.8
6.3
6.8
7.3
1900
2000
2100
2200
2300
6.0
6.5
7.0
7.5
8.0
2400
2500
2600
2700
2800
8.6
9.6
10.6
11.7
12.8
2900
3000
3100
3200
3300
13.5
14.2
14.9
15.6
16.3
7.8
8.3
8.8
9.3
9.8
’k’ for Kraftbands
0.12
0.25
0.69
0.12
0.16
0.25
0.55
0.16
0.27
0.45
’k’ for single belts
0.07
0.19
0.57
0.07
0.12
0.19
0.37
0.11
0.20
0.33
Intermediate values may be determined by linear interpolation.
The figures apply only for drives with grooved pulleys.
Values for V-flat drives can be provided upon request.
126
Design Hints
Calculating the Axial Force/Shaft Loading under Dynamic Conditions
With drives having electric motors as the prime movers, care
should be taken to ensure that the dynamic loading can be safely
accommodated by the motor shafts and bearings to which it is
applied.
● premature bearing failure
Experience has shown that drives on
In the case of two pulley drives, the driver and driven shafts and the
bearings are subjected to the same dynamic axial force, but in
opposite directions. When idlers are employed, the magnitude
and the direction of the axial force are almost always different on
each pulley. If the magnitude and direction of the dynamic axial
force is to be determined, a graphical solution, using a vector
diagram for the dynamic forces in the tight side S1 and the slack
side S2, is always recommended.
● electric motors,
● internal combustion engines,
● turbines,
● and very heavy-duty drives such as stone crushers, calenders,
and heavily loaded mills,
call for the dynamic bearing load to be determined, that
is the shaft and bearing loads on both the driver and the driven
shafts.
Exact calculation of the ”dynamic axial force” saves the unnecessary expense of:
● shaft failure or
● over designed bearings and shafts.
If only the magnitude of the dynamic axial force is to be determined, this can be achieved using the formula for ”Sa dyn”. Data from
the calculation examples given on pages 59 to 61.
PB = 171.6 kW
c1 = 1.00
v = 21.76 m/s
β = 170°
Dynamic tight side tension
S1 ≈
1020 · PB
c1 · v
S1 ≈
1020 ·171,6
1.0 · 21.76
≈ 8044 N
Dynamic slack side tension
S2 ≈
1000 · (1.02 – c1) · PB
c1 · v
S2 ≈
1000 · (1.02 – 1.0) · 171.6
1.0 · 21.76
≈ 158 N
A) Graphical solution
B) Solution using the formula for Sa dyn
Dynamic axial force
Sa dyn ≈
S12 + S22 – 2 S1 · S2 · cos β
Sa dyn ≈
80442 + 1582 – 2 · 8044 · 158 · (-0.9848) ≈ 8200 N
127
Design Hints
Belt tensioning for optibelt tension gauges
Tension gauges optibelt Optikrik
Optikrik
Tension gauges
This gauge serves a simplified method of
belt tensioning.
This simplified tensioning method should
be used for example when technical data
are not known and the optimum tension
therefore cannot be calculated. This method requires only knowledge of the diameter of the small pulley and the belt section
and construction.
The Optibelt tension gauge is used to read
off the belt tensioning. By reducing or
increasing the belt tensioning the desired
value can be obtained.
For different tensioning values, Optikrik 0,
I, II, III with corresponding measurement
areas are available.
optibelt TT 2
Tension Tester
Instructions for use
1. The gauge is placed in the middle between the two pulleys on the back of the
belt, in the case of sets of belts ideally on
the central belt. Before doing this, ensure that the indicator is pushed down into
the gauge body.(First press the indicator arm onto the scale)
2. Lay the gauge loosely on the belts to be
measured and press a finger slowly on
to the pressure surface.
3. Try not to touch the gauge with more
than one finger during the measuring
process.
4. Once you hear or feel a definite click,
immediately release pressure and the
indicator arm will remain in the measured position.
5. Carefully lift the gauge without moving
the indicator arm. Read off the belt
tensioning (see diagram). Read off the
measurement at the exact point where
the top surface of the indicator arm
crosses the scale.
6. Reduce or increase the belt tensioning
according to the measurement result
until it is within the desired tension level.
This optibelt TT 2 Tension
Tester
is used for tension checking of
drive belts by means of frequency
measurement. Measurements are
in Hertz (Hz).
When belt parameters are entered,
tension is indicated in Newton (N).
Advantages of the tester:
● Non-contact, repeated measurements
● Wide measurement spectrum from
● High accuracy of measurement
● Quality evaluation of the measurement
result
● Storage in a data base
● Easy to use
● Universal measuring head for
comfortable measuring
● Data communication via PC
128
Design Hints
Belt tensioning for Optibelt V-Belts
Section
Static belt tension Tmax
(N)
Diameter of
small pulley
RED POWER II
initial fitting
re-fitting
new V-belts existing V-belts
(mm)
Standard
(wrapped)
initial
fitting
Retension
SUPER TX M=S
initial
fitting
Retension
SPZ; 3V/9N;
XPZ; 3VX/9NX
≤ 71
> 71 ≤ 90
> 90 ≤ 125
>125 *
250
300
400
200
250
300
200
250
350
150
200
250
250
300
400
200
250
300
SPA;
XPA
≤ 100
>100 ≤ 140
>140 ≤ 200
>200 *
400
500
600
300
400
450
350
400
500
250
300
400
400
500
600
300
400
450
SPB; 5V/15N;
XPB; 5VX/15NX
≤ 160
>160 ≤ 224
>224 ≤ 355
>355 *
700
850
1000
550
650
800
650
700
900
500
550
700
700
850
1000
550
650
800
SPC;
XPC
≤ 250
>250 ≤ 355
>355 ≤ 560
>560 *
1400
1600
1900
1100
1200
1500
1000
1400
1800
800
1100
1400
1400
1600
1900
1100
1200
1500
Z/10;
ZX/X10
≤ 50
> 50 ≤ 71
> 71 ≤ 100
>100 *
–
90
120
140
70
90
110
120
140
160
90
110
130
A/13;
AX/X13
≤ 80
> 80 ≤ 100
>100 ≤ 132
>132 *
–
150
200
300
110
150
250
200
250
400
150
200
300
B/17;
BX/X17
≤ 125
>125 ≤ 160
>160 ≤ 200
>200 *
–
–
300
400
500
250
300
400
450
500
600
350
400
450
C/22;
CX/X22
≤ 200
>200 ≤ 250
>250 ≤ 355
>355 *
–
–
700
800
900
500
600
700
800
900
1000
600
700
800
* Tension values for these pulleys must be calculated.
Tension Gauges:
Optikrik 0
range:
Optikrik I
range:
Optikrik II
range:
Optikrik III
range:
70
150
500
1300
– 150
– 600
– 1400
– 3100
N
N
N
N
–
–
The static tension values shown are calculated for maximum
power transmission capability (per V-belt) and should be applied
only when accurate data is not available.
Calculation Basis
Wedge belts
Classical V-belts
speed v = 5 to 42 m/s
speed v = 5 to 30 m/s
129
Design Hints
Installation and Maintenance Aids
Safety: Before starting any maintenance work, it is extremely important that any machine components
are in a safe position which cannot be changed during maintenance work. In addition, safety
recommendations of the manufacturer are to be strictly observed.
optibelt KS V-Grooved Pulley with Taper Bush
The V-grooved pulleys are to be checked
for damage and correct dimensions before installation.
Installation (see figures on page 132)
1. All shiny surfaces like bore and end envelope of
cone of the taper bush as well as the conical bore
of the pulley have to be cleaned and degreased.
Insert taper bush and hub and align all connecting
bores. Half tapping holes have to face half plain
borings.
2. Stud screws (TB 1008-3030) and/or fillister head
screws (TB 3525-5050) should be slightly
greased and screwed in. Do not jet tighten the
screws.
3. Clean and degrease the shaft. Push pulley with
taper bush to the desired position on the shaft. See
alignment of the V-grooved pulley.
4. When using a keyway, it has to be inserted in the
hub of the shaft first. Between the keyway and the
bore hub there needs to be a certain tolerance.
5. With a socket wrench according to DIN 911 stud
screws and/or fillister head screws have to be
tightened uniformly using the tightening torque
stated in the table.
6. After a short operation period (0.5 to 1 hour)
check tightening torque of the screws and correct
if necessary.
7. In order to prevent the ingress of foreign material,
fill empty connecting bores with grease.
Taper Bushes, Screw Tightening Torque
Dimension
TB
TB
TB
TB
TB
TB
TB
TB
TB
1008,
1210,
2012
2517
3020,
3525,
4040
4545
5050
1108
1215, 1310, 1610, 1615
3030
3535
Opening
width
No. of
screws
3
5
6
6
8
10
12
14
14
2
2
2
2
2
3
3
3
3
Tightening
torque
(Nm)
5.7
20.0
31,0
49.0
92.0
115.0
172.0
195.0
275.0
Horizontal Alignment of Shafts
Motor and drive shafts are to be aligned using a spirit level, if necessary.
Note!
Maximum recommended shaft deviation 0.5°
Vertical Alignment of the V-Grooved Pulleys
The alignment of the V-grooved pulleys is checked before and after tightening the taper
bushes on a guide rail.
Note!
Check whether the face widths of the V-grooved pulleys have the same sizes. A
possible deviation of the face width has to be taken into consideration. With a
symmetrical face set-up, the distance of the parallel to the smaller face is half the
deviation.
130
Design Hints
Installation and Maintenance Aids
Initial Installation
Always install the V-belts without using force. Installations using screw drivers,
crowbars etc. cause inner and outer damages to the belt. V-belts installed under force
might only run for several days. A proper installation of the belt saves you time and
money.
With too little setting range for the positioning, the V-grooved pulleys should be pushed
onto the shafts with the belts already fitted.
Belt Tensioning
Use belt tensioning values according to Optibelt’s recommendations. Set the motor to
the given belt tension in a parallel mode. Operate the belt for some revolutions and
check the belt tension again. By experience, belt tension should be checked again after
an operation time of about 0.5 to 4 hours and corrected, if necessary.
* For further hints on belt tensioning see page 128.
*
Admissible Shaft Deviation
After applying the initial installation tension the
distances X1, X2 between the two pulleys dd1, dd2
and the parallel set to axis height are to be
measured. The maximum admissible values for the
distance X from the table should if possible be
fallen short of, depending on the diameter dd.
Depending on the pulley diameter, the intermediate values for X have to be interpolated.
Pulley
diameter
dd1, dd2
112
224
450
630
900
1100
1400
1600
mm
mm
mm
mm
mm
mm
mm
mm
Max. admissible deviation
X1, X2
0.5
1.0
2.0
3.0
4.0
5.0
6.0
7.0
mm
mm
mm
mm
mm
mm
mm
mm
Control Processes
We recommend controlling the drive regularly, e.g. after 3 to 6 months. V-grooved
pulleys are to be controlled for wear and consistence. Use the Optibelt section and
pulley groove template as aids.
When changing V-grooved pulleys with taper bush (see figure on page 132) the
following aspects have to be observed.
1. Loosen all screws. Screw out one or two screws depending on the bush size, grease them and screw
them into the proof test bore.
2. Tighten the screw or screws equally until the bush unscrews from the hub and the pulley can be moved
on the shaft freely.
3. Take off the pulley with the bush from the shaft.
** Section and pulley groove template
**
131
Design Hints
V-Grooved Pulleys with Taper Bushes
Assembley
Dimension
TB 1008-3030
Dimension
TB 3525-5050
Disassembly
Dimension
TB 1008-3030
132
Dimension
TB 3525-5050
Design Hints
Storage
● General note on storage
Properly stored V-belts retain their properties for many years
(see also DIN 7716). However, when stored under poor
conditions or handled incorrectly, the physical properties of
most rubber products will be impaired. This can be the consequence for example of the effects of oxygen, ozone, extreme
temperatures, light, moisture or solvents.
● Proper Storage
Because stress can promote both permanent deformation and
cracking, care must be taken to ensure that V-belts are stored
without stress i.e. without tension, compression or any other
form of pressure.
If V-belts have to be stored horizontally and stacked upon each
other, it is recommended that the stack height does not exceed
300 mm in order to avoid permanent deformation. If, in order
to save space, V-belts are hung, the diameter of the cylinder on
which the belts rest should be at least ten times the height of the
belt section.
● Storage area
The storage area should be dry and dust free. V-belts must not
be stored close to chemicals, solvents, fuels, lubricants and
acids etc.
optibelt S=C plus and optibelt SUPER TX
M=S belts do not need to be stored in sets as they can
be formed into sets without having to be measured.
● Temperature
V-belts should be stored at temperatures between + 15 °C and
+ 25 °C. Lower temperatures usually have no detrimental effect
on the V-belts. Since, however, belts become very stiff at low
temperatures, they should be warmed to approximately + 20 °C
before fitting to avoid fracture and cracking.
Radiators and supply pipes should be screened. V-belts should
be stored at least 1m away from radiators.
● Cleaning
Dirty V-belts can be cleaned using a 1:10 mixture of glycerine
and methylated spirits. Petrol, benzole, turpentine and the like
should not be used.
In addition, sharp objects, wire brushes, emery paper etc. must,
under all circumstances, be avoided as these can cause damage to the belt.
● Light
V-belts should be protected against light, especially direct
sunlight and strong artificial light with a high ultra-violet content
(ozone formation) such as naked fluorescent tubes. Illumination
using conventional light bulbs is advisable.
● Ozone
In order to counteract the harmful effects of ozone, warehouses
should not contain any appliances that generate ozone, for
example fluorescent lights, mercury vapour lamps or high
voltage electrical equipment. Combustion gases and vapours
which could lead to the formation of ozone by photo-chemical
processes must be avoided or eliminated.
● Moisture
Damp storage areas are unsuitable. Care must be taken to
ensure that condensation does not develop. The most favourable relative air humidity is below 65%.
133
Design Hints
Physical Properties
– 30
+ 100
good
yes
SUPER TX M=S
raw edge, moulded
cogged V-belts
– 30
+ 90
good
MARATHON 1,
MARATHON 2 M=S
automotive belts
– 30
+ 90
RED POWER II
high-performance
wedge belts
VB
classical V-belts
KB
Kraftbands
DK
double section V-belts
SUPER VX
variable speed belts
RB
ribbed belts
134
Sjpecial
construction
yes1)
Standard
construction
yes
– 40
+ 70
Smooth running
limited
SK
high-performance
wedge belts
FRAS - for mining
applications
– 30
+ 90
Standard
construction
S=C plus SatzConstant1)
M=S Matched Set2)
Stretch
Anti-static properties
(after testing)
Oil
resistant
Standard
construction
Ambient temperature
maximum/minimum
(°C)
Special
construction
XHR
These tables are provided
to simplify selection of the
correct Optibelt for any
drive problem. Detailed information is given elsewhere in this manual.
ja
medium
good
low
very
low
yes1)
good
very
low
yes
yes2)
good
very
low
good
yes
M2
yes2)
good
very
low
yes1)
medium
good
low
very
low
very
low
– 40
+ 70
– 30
+ 90
limited
yes
– 40
+ 70
– 35
+ 90
limited
yes
good
low
– 35
+ 85
good
yes
medium
low
– 30
+ 90
good
yes
very
good
very
low
PJ
PK, PL
Special
construction
very
good
low
– 30
+ 90
– 30
+ 120
good
ja
Design Hints
Recommended applications
Synchronous
Standard
construction
Special construction
Maintenance
up to
97 %
good
low
possible
no
up to limi1 : 10 ted
good
low
≤ 42
up to
97%
good
low
possible
no
up to limi1 : 10 ted
good service free
depends
on section up to
97 %
≤ 42
good
low
possible
no
up to limi1 : 12 ted
good
≤ 42
up to
97 %
good
low
possible
no
up to limi1 : 12 ted
good service free
≤ 30
up to
97 %
good
low
possible
no
up to limi1 : 12 ted
good
low
Pumps, presses, crushers, rotary saws, pillar drills,
planing machinery, concrete mixers, compressors,
lawn mowers, aerators, bale presses, chaff cutters
depends up to
on section
97 %
≤ 42
very
good
very
low
not
possible
no
up to limi1 : 15 ted
very
good
low
Fans, shredders, road millers, extruders, rotary mowers, stone crushers, saw mills, vibration rollers,
conveyors, mixers, combine harvesters, pulpers
up to
95 %
good
low
not
possible
no
up to
1:5
very
good good
low
Special reversible drives, textile looms, sweepers,
harvesters
≤ 30
Efficiency
≤ 42
Recommended
max. belt speed
m/s
Use on variable
speed pulleys
There are a number of applications that
can be covered by more than one type of
belt. In these instances, belt selection must
be made on an individual case basis.
Vibration behaviour
Use with
outside
idlers
Behaviour under
shock loading
Recommended max.
speed ratio
Physical Properties
depends
up to
on section 95 %
≤ 42
depends up to
on section 96 %
≤ 60
low
Compressors, mixers, rotary print machines, extruders,
worm compressors, textile looms, axial flow fans,
rotary pumps
Fans, pumps, mixers, grinders, special machinery,
lathes and drills, grinders
Fans, pumps, mixers, grinders, special machinery,
lathes and drills, grinders
Automobiles, generators, water pumps, fans
good
low
gut
no
up to
1 : 12
for 2
variable
speed
pulleys
limited
low
Special drives, compact units, snowmobile drives,
multi-colour offset, adjustable pulley sets, thresher
drum drives, spooling machines, lathes
good
very
low
not
possible
no
up to good
1 : 35
low
Offset machines, washing machines, milling machines, drills, auxiliary drives, main shaft drives
135
Design Hints
– 30
+ 85
ZRM
timing belts made
of polyurethane
Stretch
ZR
timing belts
Smooth running
– 30
+ 85
Oil
resistant
Standard
construction
OMEGA
timing belts
Special
construction
XHR
Ambient temperature
maximum/minimum
(°C)
Standard
construction
These tables are provided
to simplify selection of the
correct Optibelt for any
drive problem. Detailed information is given elsewhere in this manual.
Anti-static properties
(after testing)
Physical Properties
limited
yes ja1)
very
good
good
keine sehr
gering
limited
yes
very
good
keine
– 30
+ 80
good
no
good
keine
RR
plastic round section
belting
– 10
+ 80
good
no
medium
high
KK
plastic V-belting
– 10
+ 80
good
no
medium
high
Optimat OE
open ended
V-belting, punched
DIN 2216
– 20
+ 70
limited
no
medium
high
PKR
V-belts with patterned top surface
– 30
+ 70
limited
yes
medium
low
Optimax HF
high-performance
flat belts
– 20
+ 110
limited
no
very
good
low
136
– 30
+ 120
Design Hints
Special construction
Maintenance
maintenance
free
Copiers, food processors, swivel arm robots, gripper
drives, belt grinders, cam shaft drives, brush drives,
clocks, X-ray equipment, envelope stuffers, cameras,
plotters, coin operated machinery, main and feed
drives, conveyor drives, material feed, printers
yes
up to
1 : 10 good
gut
maintenance
free
Cameras, plotters, printers, coin operated machinery,
main and feed drives, conveyor drives, sample conveyors, material feed, flight models
not
possible
no
up to
1 : 10 good
gut
frequent
retensioning
Special machinery
low
not
possible
no
up to
1 : 10 good
gut
frequent
retensioning
Packaging machinery, conveyor systems, ram
conveyors, varnishing equipment
medium
limited
possible
no
up to limi1 : 10 ted
frequent
retensioning
Where installation conditions are difficult
low
limited
possible
no
up to limi1 : 10 ted
very
low
not
possible
no
up to very
1 : 12 good
depends
on section up to
98 %
≤ 80
sensitive
up to
95 %
good
≤ 20
up to
90 %
depends
on section up to
95 %
≤ 20
≤ 70
up to
95 %
good
good
good
Standard
construction
gut
sensitive
Synchronous
up to
1 : 10 good
depends
on section up to
98 %
≤ 80
≤ 20
There are a number of applications that
can be covered by more than one type of
belt. In these instances, belt selection must
be made on an individual case basis.
gut
depends
not
on
possible
speed
good
Recommended applications
Textile machines, spinning machines, textile looms,
printing machines, paper machines, wood working
machines, machine tools, linear units, conveyors, skid
unit, packing machines, door and gate openers,
lifting devices, mixers, extruders, compressors
sensitive
up to
95 %
Use with
outside
idlers
maintenance
free
depends up to
on section 98 %
≤ 80
≤ 20
Recommended max.
speed ratio
Use on variable
speed pulleys
Vibration behaviour
Behaviour under
shock loading
Efficiency
Recommended
max. belt speed
m/s
Physical Properties
yes
up to good
1 : 10
depends
not
on
speed possible
yes
depends
not
on
speed possible
low
gut
low
low
Conveyor systems in the timber industry, in cement
works, in agriculture, in the ceramics industry, in the
glass industry, at airports, in sea and river ports
Water turbines, emergency power generators, saw
mills, shredders, worm compressors, roller drives,
transmission drives, conical drives, cross cutters, floor
cleaning equipment, multiple positioning drives, crushers, sealing belts, hammer mills
137
Design Hints
Problems – Causes – Remedies
Problems
Belt failure shortly after fitting
Breaks and cracks in the base
of the belt (brittleness)
Severe belt vibration
Belts cannot be retensioned
138
Causes
Remedies
Forceful installation, causing damage to
the tension cord
Follow installation instructions for easy
belt fitting
Ingress of foreign matter during operation
Fit protection guard
Drive undersized, not enough belts
Check drive design and determine new
dimensions
Drive blocked
Remove cause
Outside idler pulley in use that does not
comply with the positioning and sizes recommended by us
Observe Optibelt recommendations, e.g.
increase the diameter; replace with an
inside idler on the slack side of the drive;
use Optibelt Red Power II or an Optibelt
special construction
Pulley diameter too small
Re-design using recommended minimum
pulley diameters; use an Optibelt special
construction or Optibelt Super TX M=S
Excessive heat
Remove or baffle heat source; improve
ventilation; Use Optibelt special construction XHR (extra heat resistant) or Optibelt
Super TX M=S or V-belt with Aramid cord
construction
Excessive cold
Warm the belt before operation; use
Optibelt special construction XCR (extra
cold resistant)
Excessive belt slip
Retension drive according to installation
instructions; check drive design and redesign if necessary
Contamination by chemicals
Protect drive from contamination source;
use Optibelt special construction
Drive undersized
Check drive design and modify if
necessary
Centre distance significantly
longer than recommended
Shorten centre distance;
Use an inside idler in the drive slack side;
Re-design using Optibelt KB Kraftbands
High shock load
Use Optibelt KB Kraftbands; Use an inside
idler in the drive slack side; use an
Optibelt special construction
Belt tension too low
Correct tension
Unbalanced V-pulleys
Balance pulleys
Insufficient allowance for centre distance in
drive design
Modify drive to allow for the Optibelt
recommended take-up
Excessive stretch caused by inadequate
performance
Carry out drive calculation and re-design
Incorrect belt length
Use shorter belts
Design Hints
Problems – Causes – Remedies
Problems
Belts turn over in pulley grooves
Causes
Remedies
Poor drive alignment
Incorrect belt / pulley groove section
Realign pulleys
Match belt and pulley groove section
Excessive wear in pulley grooves
Excessive vibration
Renew pulleys
Use an inside idler on drive slack side; use
Optibelt KB Kraftbands
Belt tension too low
Foreign matter in the pulley grooves
Re-tension drive
Remove foreign matter and install drive
guard
Starting torque too high
Check drive design and re-design
Incorrect pulley groove angle
Re-machine or replace pulleys
Excessive pulley groove wear
Replace pulleys
Incorrect belt / pulley groove section
Match belt and pulley groove section
Poor pulley alignment
Realign pulleys
Pulley diameter below recommended
minimum
Increase pulley diameter (re-design drive);
use Optibelt special construction or
Optibelt TX M=S
Belt tension too low
Check tension and retension
Belt rubbing against or catching on
protruding parts
Remove protruding parts; re-position drive
Poor pulley alignment
Realign pulleys
Belt tension too low
Check tension and retension
Drive overloaded
Check drive design and re-design if necessary
Belt swelling or softening
and sticky
Contamination by oil, grease, chemicals
Protect drive from contamination source;
use Optibelt XOR (extra oil resistant) or
Optibelt Super TX M=S;
Clean pulley grooves with petrol or alcohol before fitting new belts
Uneven belt stretch
Worn or badly machined pulley grooves
Replace pulleys
Used belts mixed with new belts on the drive
Replace with a completely new set of belts
Belts from different manufacturers used on
same drive
Belt sets must comprise belts from one
manufacturer only – Optibelt S=C plus,
Optibelt Super TX M=S, Optibelt Red
Power II
Excessive wear on belt edges
Excessive running noise
Should other problems occur, please contact our engineers from the applications engineering dept They will require comprehensive technical details in order to provide
you with concrete solutions.
139
Design Hints
Length Measurement Conditions and Conversion Factors
Measuring the Belt Length
The belt is placed over two identically sized measuring pulleys with
the design of groove shown in the following drawings. The
dimensions are given in the Tables 63 to 69, on pages 141/142.
Measurement pulley for wedge belts to BS 3790, DIN 7753
Part 1 and classical V-belts to BS 3790 and DIN 2215
Pressure is applied to the adjustable pulleys so that the force Q is
applied to the belt. Before measuring the drive centre distance a,
the belt should be fully rotated three times under load. This ensures
that the belt is well seated in the pulley, an essential pre-condition
for the accuracy of the resulting measurement.
The length is obtained by adding the diameter of the pulley to twice
the drive centre distance a.
L d = 2 a + Ud
L a = 2 a + Ua
You will find the length conversion factors in the tables on pages
141/142 and 145/146.
Measurement pulley for wedge belts
USA Standard RMA/MPTA
Arrangement for measuring belt length
Measurement pulley for Kraftbands
Measurement pulley for double section V-belts
Force Q (N)
140
Design Hints
Length Measurement Conditions and Conversion Factors
Table 63: Optibelt SK wedge belts
Optibelt Super TX M=S wedge belts, raw edge, moulded cogged
Measurement pulleys and force to BS 3790, DIN 7753 Part 1 and ISO 4183
Datum
circumference
Ud
= dd · π
Datum
diameter
Outside
diameter
Datum
width
Groove
angle
Groove
depth
Force
Outside length
Inside length
± 0.05
± 0.05
da
bd
α°
± 10’
tmin
Q (N)
La (mm)
Li (mm)
SPZ; XPZ
300
95.49
100
8.5
36
11
360
La ≈ Ld + 13
La ≈ Li + 51
Li ≈ Ld – 38
Li ≈ La – 51
SPA; XPA
450
143.24
149
11.0
36
14
560
La ≈ Ld + 18
La ≈ Li + 63
Li ≈ Ld – 45
Li ≈ La – 63
SPB; XPB
600
190.99
198
14.0
36
18
900
La ≈ Ld + 22
La ≈ Li + 82
Li ≈ Ld – 60
Li ≈ La – 82
SPC; XPC
1000
318.31
328
19.0
36
24
1500
La ≈ Ld + 30
La ≈ Li + 113
Li ≈ Ld – 83
Li ≈ La – 113
Section
dd
Table 64: Optibelt SK wedge belts
Optibelt Super TX M=S wedge belts, raw edge, moulded cogged
Measurement pulleys and force to USA Standard RMA/MTPA
Outside
circumference
Ua
= da · π
Outside
diameter
3V/ 9N; 3VX/9NX
5V/15N; 5VX/15NX
Section
8V/25N
Groove
angle
Groove
depth
Force
Inside length
± 0,13
Upper
groove
width
b1
± 0,13
α°
± 15’
tmin
Q (N)
Li (mm)
300
95.5
8.90
38
9.0
445
Li ≈ La – 42
600
191.0
15.24
38
15.0
1000
Li ≈ La – 71
1000
318.3
25.40
38
25.5
2225
Li ≈ La – 120
da
Table 65: Optibelt VB classical V-belts
Optibelt Super TX M=S classical V-belts, raw edge, moulded cogged
Measurement pulleys and force to BS 3790, DIN 2215 and ISO 4183
Section
Datum
circumference
Ud
= dd · π
Datum
diameter
dd
Outside
diameter
Datum
width
Groove
angle
Groove
depth
Force
Outside length
Inside length
da
bd
α°
± 10’
tmin
Q (N)
La (mm)
Ld (mm)
± 0,05
± 0,05
5
70
22.28
24.88
4.2
32
5
30
La ≈ Li + 19
La ≈ L d + 8
Ld ≈ Li + 11
L d ≈ La – 8
Y/6
90
28.65
31.85
5.3
32
6
40
La ≈ Li + 25
La ≈ Ld + 10
Ld ≈ Li + 15
Ld ≈ La – 10
8
140
44.56
48.56
6.7
32
8
80
La ≈ Li + 31
La ≈ Ld + 12
Ld ≈ Li + 19
Ld ≈ La – 12
Z/10; ZX/X10
180
57.30
62.30
8.5
34
10
110
La ≈ Li + 38
La ≈ Ld + 16
Ld ≈ Li + 22
Ld ≈ La – 16
A/13; AX/X13
300
95.50
102.10
11.0
34
12
200
La ≈ Li + 50
La ≈ Ld + 20
Ld ≈ Li + 30
Ld ≈ La – 20
B/17; BX/X17
400
127.32
135.72
14.0
34
15
300
La ≈ Li + 69
La ≈ Ld + 29
Ld ≈ Li + 40
Ld ≈ La – 29
20
520
165.52
175.12
17.0
34
18
750
La ≈ Li + 79
La ≈ Ld + 31
Ld ≈ Li + 48
Ld ≈ La – 31
C/22; CX/X22
700
222.82
234.22
19.0
34
20
750
La ≈ Li + 88
La ≈ Ld + 30
Ld ≈ Li + 58
Ld ≈ La – 30
25
800
254.65
267.25
21.0
34
22
750
La ≈ Li + 100
La ≈ Ld + 39
Ld ≈ Li + 61
Ld ≈ La – 39
D/32
1000
318.31
334.52
27.0
36
28
1400
La ≈ Li + 126
La ≈ Ld + 51
Ld ≈ Li + 75
Ld ≈ La – 51
E/40
1800
572.96
596.96
32.0
36
36
1800
La ≈ Li + 157
La ≈ Ld + 77
Ld ≈ Li + 80
Ld ≈ La – 77
141
Design Hints
Length Measurement Conditions and Conversion Factors
Table 66: Optibelt KB Kraftbands with high-performance wedge belts
Measurement pulleys and force
Groove
angle
Groove
depth
Mean
distance
Tolerance
Σ Tol.
Force
per rib
Inside length
± 0,13
Upper
groove
width
b1
± 0,13
α°
± 15’
tmin
e
e1)
e2)
Q (N)
Li (mm)
300
95.50
8.90
38
9.0
10.30
± 0.25
± 0.5
445
Li ≈ La – 42
5V/15J
600
191.00
15.20
38
15.0
17.50
± 0.25
± 0.5
1000
Li ≈ La – 71
8V/25J
1000
318.30
25.40
38
25.5
28.60
± 0.40
± 0.8
2225
Li ≈ La – 120
Outside
circumference
Ua
= da · π
Outside
diameter
3V/9J
Section
da
Table 67: Optibelt KB Kraftbands Section SPZ, SPA, SPB and SPC
Measurement pulleys and force
Section
Datum
circumference
Ud
= dd · π
Datum
Outside
diameter diameter
Datum
width
Groove
angle
Groove
depth
Mean Tolerance
distance
Σ Tol.
Force
per rib
Datum length
± 0,13
± 0,13
da
bd
α°
± 15’
tmin
e
e1)
e2)
Q (N)
Ld (mm)
dd
SPZ
300
95.49
100.00
8.5
36
11.0
12.00
± 0.30
± 0.5
360
Ld ≈ La – 13
SPA
450
143.24
149.00
11.0
36
14.0
15.00
± 0.30
± 0.5
560
Ld ≈ La – 18
SPB
600
190.99
198.00
14.0
36
18.0
19.00
± 0.40
± 0.8
900
Ld ≈ La – 22
SPC
1000
318.31
328.00
19.0
36
24.0
25.50
± 0.40
± 0.8
1500
Ld ≈ La – 30
Table 68: Optibelt KB Kraftbands with classical V-belts
Measurement pulleys and force
Groove
angle
Groove
depth
Mean
distance
Tolerance
Σ Tol.
Force
per rib
Inside length
± 0,13
Upper
groove
width
b1
± 0,13
α°
± 15’
tmin
e
e1)
e2)
Q (N)
Li (mm)
254
80.85
12.45
32
12.5
15.88
± 0.38
± 0.8
300
Li ≈ La – 36
B/HB
381
121.28
16.00
32
14.5
19.05
± 0.38
± 0.8
450
Li ≈ La – 62
C/HC
635
202.13
22.33
34
20.0
25.40
± 0.38
± 0.8
850
Li ≈ La – 75
D/HD
889
282.96
31.98
34
28.0
36.53
± 0.38
± 0.8
1000
Li ≈ La – 111
Outside
circumference
Ua
= da · π
Outside
diameter
A/HA
Section
da
1) Tolerance for the mean distance e between two adjacent grooves.
2) The sum of all deviations from the nominal dimension e for all groove spacing on one pulley must not exceed the stated figure.
Table 69: Optibelt DK double section V-belts
Measurement pulleys and force according to DIN 5289
Outside
circumference
Ua = da · π
Outside
diameter
da
Upper groove
width
b1
Groove
angle
α° ± 20’
Groove
depth
tmin
Q (N)
AA/HAA
300
95.49
12.6
34
8
300
BB/HBB
400
127.32
16.2
34
10
450
CC/HCC
600
190.99
22.3
34
14
850
DD/HDD
900
286.48
32.0
34
20
1400
22 x 22
600
190.99
22.3
34
14
750
25 x 22
942
300.00
25.0
34
22
1200
Section
142
Force
Design Hints
Length Tolerances
Table 70: Wedge belts DIN 7753 Part 1
Length tolerance (mm
Permissible deviation from
pitch length
Section
Set tolerance (mm)
Permissible difference between the
pitch lengths Ld of the belts
in one and the same set on
multiple belt drives
Optibelt
DIN 7753/ISO 4184
Pitch length (mm)
Optibelt
SPZ/XPZ
SPA/XPA
SPB/XPB
SPC/XPC
>
>
>
>
>
>
>
>
630
900
1 250
2 000
3 150
5 000
8 000
10 000
≤ 900
≤ 1 250
≤ 2 000
≤ 3 150
≤ 5 000*
≤ 8 000
≤10 000
≤12 500
wrapped
DIN 7753
DIN
DIN
± 2.0
± 2.0
± 2.0
± 4.0
± 6.0
± 8.0
± 6 bis ±
9
± 9 bis ± 12
± 12 bis ± 20
± 20 bis ± 32
± 32 bis ± 50
± 50 bis ± 80
± 80 bis ± 100
±100 bis ± 125
wrapped
±
±
±
±
±
±
2.0
2.0
2.0
2.0
2.0
4.0
6.0
8.0
raw edge
2.0
4.0
6.0
6.0
10.0*
wrapped
2.0
2.0
2.0
4.0
6.0
10.0
raw edge
2.0
4.0
6.0
6.0
10.0*
16.0
Table 71: Classical V-belts DIN 2215
Length tolerance (mm
Permissible deviation from
pitch length
Section
Pitch length (mm)
Optibelt
wrapped
5
Y/6
8
Z/10; ZX/X10
A/13; AX/X13
B/17; BX/X17
20
C/22; CX/X22
25
D/32
E/40
≤
250
> 250 ≤
315
> 315 ≤
400
> 400 ≤
500
> 500 ≤
630
> 630 ≤
800
> 800 ≤
900
> 900 ≤ 1 250
> 1 250 ≤ 1 600
> 1 600 ≤ 2 000
> 2 000 ≤ 2 500
> 2 500 ≤ 3 150
> 3 150 ≤ 4 000*
> 4 000 ≤ 5 000
> 5 000 ≤ 6 300
> 6 300 ≤ 8 000
> 8 000 ≤10 000
>10 000 ≤12 500
>12 500 ≤15 000
>15 000 ≤20 000
DIN
DIN
DIN
DIN
DIN
DIN
DIN
DIN
± 2,0
± 2,0
± 2,0
± 2,0
± 2,0
± 2,0
± 4,0
± 4,0
± 6,0
± 8,0
DIN
DIN
DIN 2215
+ 8.0/–
+ 9.0/–
+ 10.0/–
+ 11.0/–
+ 13.0/–
+ 15.0/–
+ 17.0/–
+ 19.0/–
+ 23.0/–
+ 27.0/–
+ 31.0/–
+ 37.0/–
+ 44.0/–
+ 52.0/–
+ 63.0/–
+ 77.0/–
+ 93.0/–
+ 112.0/–
+ 140.0/–
+ 170.0/–
4.0
4.0
5.0
6.0
6.0
7.0
8.0
10.0
11.0
13.0
16.0
18.0
22.0
26.0
32.0
38.0
46.0
56.0
70.0
85.0
Set tolerance (mm)
Permissible difference between the
pitch lengths Ld of the belts
in one and the same set on
multiple belt drives
Optibelt
DIN 2215/ISO 4184
wrapped
2.0
2.0
2.0
2.0
2.0
2.0
2.0
4.0
± 2.0
± 2.0
± 2.0
± 2.0
± 2.0
± 2.0
± 4.0
± 4.0
± 6.0
± 8.0
DIN
DIN
raw edge
2.0
2.0
2.0
4.0
4.0
4.0
6.0
8.0
8.0*
wrapped
raw edge
2.0
2.0
2.0
2.0
2.0
2.0
2.0
4.0
4.0
4.0
8.0
8.0
12.0
12.0
20.0
20.0
32.0
32.0
48.0
48.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
4.0
4.0
4.0
8.0
8.0
12.0*
* Maximum production length for raw edge V-belts ≤ 3550 mm.
Optibelt-S=C plus or Optibelt Super TX M=S V-belts can be used in sets without measuring or remeasuring.
143
Design Hints
Length Tolerances
Table 72: Wedge belts USA Standard RMA/MTPA
Section
3V/9N;
3VX/9NX,
5V/15N;
5VX/15NX;
8V/25N
Length
designation
265
530
560
600
800
1 000
1 120
1 500
2 000
2 500
3 150
4 000
4 250
4 750
≤
500
≤ 800
≤ 1 000
≤ 1 060
≤ 1 400
≤ 1 900
≤ 2 360
≤ 3 000
≤ 3 750
≤ 4 500
≤ 5 000
Length tolerance (mm)
Permissible deviation from
outside lengths
Outside length Replace complete belt sets
(mm)
Optibelt
wrapped
RMA/MPTA
673
1 346
1 422
1 524
2 032
2 540
2 845
3 810
5 080
6 350
8 001
10 160
10 795
12 065
≤ 1 270
≤
≤
≤
≤
≤
≤
≤
≤
±
±
±
±
±
±
±
±
±
±
±
±
±
±
acc. RMA/MPTA
± 2
± 2
± 2
± 2
± 2
± 2
± 2
± 4
± 4
± 6
± 8
± 8
± 12
2 032
2 540
2 692
3 556
4 826
5 994
7 620
9 525
≤ 11 430
≤ 12 700
8
10
10
10
13
15
15
20
20
20
25
25
30
30
Set tolerance (mm)
Permissible deviation between the outside lengths La of the belts in one and the
same set on multiple belt drives
Replace complete belt sets
Optibelt
wrapped
raw edge
±
±
±
±
±
±
±
±
±
±
±
±
±
4
2
2
2
2
2
2
2
4
4
6
8
8
12
RMA/MPTA
4
4
6
6
6
6
10*
4
4
6
6
6
6
10
10
10
16
16
16
16
24
Table 73: Double section V-belts
Section
AA/HAA
BB/HBB
CC/HCC
DD/HDD
22 x 22
25 x 22
Reference length (mm)
1 250
1 320
1 700
2 120
2 650
3 350
4 250
5 300
6 700
8 500
<
<
<
<
<
<
<
<
<
<
Length tolerance (mm)
Set tolerance (mm)
Permissible deviation of the Permissible difference betreference lengths
ween the reference lengths
of the double section Vbelts in one and the same
set on multiple belt drives
+ 8/– 16
+ 9/– 18
+ 11/– 22
+ 13/– 26
+ 15/– 30
+ 18/– 36
+ 22/– 44
+ 26/– 52
+ 32/– 64
+ 39/– 78
1 320
1 700
2 120
2 650
3 350
4 250
5 300
6 700
8 500
10 000
4.0
4.0
5.0
6.3
8.0
10.0
12.5
16.0
20.0
25.0
Table 74: Kraftbands with high-performance wedge belts and classical V-belts
Section
3V/9J; 3VX/9JX
5V/15J; 5VX/15JX
8V/25J
SPZ; SPA; SPB; SPC
A/HA
B/HB
C/HC
D/HD
144
Length and set tolerances
USA-Standard RMA/MPTA
DIN/ISO
DIN/ASAE
* Maximum production length for raw edge V-belts ≤ 3550 mm.
Tables
Conversion Factors
Optibelt SK high-performance wedge belts DIN 7753 Part 1
Section
Cross-section
bxh≈
Section
base
width
bu ≈
Belt length
Datum
width
bd
SPZ
9.7 x 8
4.2
8.5
SPA
12.7 x 10
5.8
11.0
SPB
16.3 x 13
7.3
14.0
SPC
22.0 x 18
9.6
19.0
Nominal- Outside length
length
La
Datum
length
Ld
La
La
La
La
La
La
La
La
≈
≈
≈
≈
≈
≈
≈
≈
Ld
Li
Ld
Li
Ld
Li
Ld
Li
+
+
+
+
+
+
+
+
Datum length
Ld
13
51
18
63
22
82
30
113
Inside length
Li
Li ≈
Li ≈
Li ≈
Li ≈
Li ≈
Li ≈
Li ≈
Li ≈
—
—
—
—
Ld
La
Ld
La
Ld
La
Ld
La
–
–
–
–
–
–
–
–
38
51
45
63
60
82
83
113
Recommended
minimum pulley
diameter
(mm)
Datum
diameter
dd
Belt
weight
(≈ kg/m)
63
0.074
90
0.123
140
0.195
224
0.377
63
0.074
140
0.195
335
0.575
Optibelt SK high-performance wedge belts USA Standard RMA/MTPA
3V/9N
9.0 x 8
4.2
—
5V/15N
15.0 x 13
7.3
—
8V/25N
25.0 x 23
9.6
—
Outside
length
La
—
Ld ≈ L a –
4∗
Li ≈ La – 42
—
Ld ≈ La – 11∗
Li ≈ La – 71
—
Li ≈ La – 120
—
Outside
diamter
da
∗ The conversion factors Ld to La is used when a section according to DIN 7753 Part 1 is to be replaced by the corresponding section according to RMA/MPTA.
Optibelt Super TX M=S wedge belts – raw edge, moulded cogged – DIN 7753 Part 1
XPZ
9.7 x 8
4.2
8.5
XPA
12.7 x 10
5.8
11.0
XPB
16.3 x 13
7.3
14.0
XPC
22.0 x 18
9.6
19.0
Datum
length
Ld
La
La
La
La
La
La
La
La
≈
≈
≈
≈
≈
≈
≈
≈
Ld
Li
Ld
Li
Ld
Li
Ld
Li
+
+
+
+
+
+
+
+
13
51
18
63
22
82
30
113
Li ≈
Li ≈
Li ≈
Li ≈
Li ≈
Li ≈
Li ≈
Li ≈
—
—
—
—
Ld
La
Ld
La
Ld
La
Ld
La
–
–
–
–
–
–
–
–
38
51
45
63
60
82
83
113
Datum
diameter
dd
56
0.065
71
0.111
112
0.183
180
0.340
Optibelt Super TX M=S wedge belts – raw edge, moulded cogged – USA Standard RMA/MTPA
3VX/9NX
9.0 x 8
4.2
—
Ld ≈ L a –
—
Outside
length
La
4∗
Li ≈ La – 42
Outside
diamter
56
40
0.062
Datum
diameter
dd
63
0.099
90
0.165
140
0.276
—
20
0.018
—
28
0.026
—
40
0.042
—
50
0.064
71
0.109
112
0.196
160
0.266
—
180
0.324
—
250
0.420
—
355
0.668
—
500
0.958
—
Ld ≈ La – 11∗ Li ≈ La – 71
5VX/15NX
15.0 x 13
7.3
—
112
da
∗ The conversion factors Ld to La is used when a section to BS 3790 or DIN 7753 Part 1 is to be replaced by the corresponding section to RMA/MPTA.
0.065
0.183
Optibelt Super TX M=S V-belts – raw edge, moulded cogged
ZX/X10
10.0 x 6
5.9
8.5
AX/X13
13.0 x 8
7.5
11.0
BX/X17
17.0 x 11
9.4
14.0
CX/X22
22.0 x 14
12.3
19.0
Datum
length
Ld
La
La
La
La
La
La
La
La
≈
≈
≈
≈
≈
≈
≈
≈
Li
Ld
Li
Ld
Li
Ld
Li
Ld
+
+
+
+
+
+
+
+
38
16
50
20
69
29
88
30
La
La
La
La
La
La
La
La
La
La
La
La
La
La
La
La
La
La
La
La
La
La
≈
≈
≈
≈
≈
≈
≈
≈
≈
≈
≈
≈
≈
≈
≈
≈
≈
≈
≈
≈
≈
≈
Li
Ld
Li
Ld
Li
Ld
Li
Ld
Li
Ld
Li
Ld
Li
Ld
Li
Ld
Li
Ld
Li
Ld
Li
Ld
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
19
8
25
10
31
12
38
16
50
20
69
29
79
31
88
30
100
39
126
51
157
77
Li ≈
Li ≈
Li ≈
Li ≈
Li ≈
Li ≈
Li ≈
Li ≈
—
—
—
—
Ld
La
Ld
La
Ld
La
Ld
La
–
–
–
–
–
–
–
–
22
38
30
50
40
69
58
88
Optibelt VB classical V-belts DIN 2215
5
5.0 x 3
2.8
4.2
Y/6
6.0 x 4
3.3
5.3
8
8.0 x 5
4.5
6.7
Z/10
10.0 x 6
5.9
8.5
A/13
13.0 x 8
7.5
11.0
B/17
17.0 x 11
20
9.4
14.0
20.0 x 12.5
11.4
17.0
C/22
22.0 x 14
12.3
19.0
25
25.0 x 16
14.0
21.0
D/32
32.0 x 20
18.2
27.0
E/40
40.0 x 25
22.8
32.0
Datum
length
Ld
Ld ≈
Ld ≈
Ld ≈
Ld ≈
Ld ≈
Ld ≈
Ld ≈
Ld ≈
Ld ≈
Ld ≈
Ld ≈
Ld ≈
Ld ≈
Ld ≈
Ld ≈
Ld ≈
Ld ≈
Ld ≈
Ld ≈
Ld ≈
Ld ≈
Ld ≈
Li
La
Li
La
Li
La
Li
La
Li
La
Li
La
Li
La
Li
La
Li
La
Li
La
Li
La
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
11
8
15
10
19
12
22
16
30
20
40
29
48
31
58
30
61
39
75
51
80
77
—
—
—
Datum
diameter
dd
145
Tables
Conversion Factors
Optibelt KB Kraftbands with high-performance wedge belts to ISO 5290/USA Standard RMA/MTPA
Section
3V/9J
Belt length
Lower belt
width
Height *
h≈
bu ≈
of the
single belts
9.9
4.2
5V/15J
15.1
7.3
8V/25J
25.5
9.6
Nominal
length
Outside length
La
Datum length
Ld
Inside length
Li
—
—
Li ≈ La – 42
—
—
Li ≈ La – 71
—
—
La ≈ Ld + 13
Recommended
minimum pulley
diameter
(mm)
Rib weight
(≈ kg/m)
67
0.122
160
0.252
Li ≈ La – 120
315
0.693
—
—
80
0.120
La ≈ Ld + 18
—
—
112
0.166
La ≈ Ld + 22
—
—
180
0.261
La ≈ Ld + 24
—
—
250
0.555
Outside
length
La
Outside
diameter
da
Optibelt KB Kraftbands with high-performance wedge belts
SPZ
10.5
5.4
SPA
12.5
7.0
SPB
15.6
8.8
SPC
22.6
9.3
Datum
length
Ld
Datum
diameter
dd
Optibelt KB Kraftbands USA Standard RMA/MTPA
A
9.9
7.5
La ≈ Li + 36
Ld ≈ Li + 30
—
B
13.0
9.4
La ≈ Li + 62
Ld ≈ Li + 40
—
C
16.2
12.3
La ≈ Li + 75
Ld ≈ Li + 58
—
D
22.4
18.2
La ≈ Li + 111
Ld ≈ Li + 75
—
Datum
lenth
Ld
Datum
diameter
dd
80
0.163
125
0.266
200
0.447
355
0.798
80
0.163
125
0.266
200
0.447
355
0.798
Optibelt KB Kraftbands USA Standard ASAE S 211. …
HA
9.9
7.5
HB
13.0
9.4
HC
16.2
12.3
Outside
length
La
—
—
Li ≈ La – 36
—
—
Li ≈ La – 62
—
—
Li ≈ La – 75
—
Li ≈ La – 111
HD
22.4
18.2
—
∗ The width of the Kraftband is a function of the number of ribs.
Optibelt DK double section V-belt DIN 7722/ISO 5289
Section
AA/HAA
Cross-section
bxh≈
Section
base
width
bu ≈
13 x 10
Datum
length
Recommended
minimum pulley
diameter
(mm)
Belt length
—
Reference length ≈ mean length – 4
Reference length ≈ mean length – 8
BB/HBB
17 x 13
—
CC/HCC
22 x 17
—
DD/HDD
32 x 25
—
Reference
length
Outside
diameter
da
Reference length ≈ mean length + 3
Outside
diameter
da
Reference length = mean length
Belt
weight
(≈ kg/m)
80
0.150
125
0.250
224
0.440
355
0.935
280
0,511
280
0,625
Optibelt DK double section V-belt DIN 7722/ISO 5289s
22 x 22
22 x 22
—
25 x 22
25 x 22
—
Reference
length
Reference length = mean length
Outside
diameter
da
Reference length = mean length
Optibelt FB automotive fan belts
Section
Cross-section
bxh≈
Section
base
width
bu ≈
9.5
10 x 8
4.9
8.5
12.5
13 x 10
5.8
11.0
Datum
width
bd
Belt length
Nominal
length
Outside length
La
Datum length
Ld
Inside length
Li
Outside
length
La
—
Ld ≈ La – 13
Li ≈ La – 51
—
Ld ≈ La – 18
Li ≈ La – 63
Recommended
minimum pulley
diameter
(mm)
Agreed between
vehicle and belt
manufacturers
Belt
weight
(≈ kg/m)
0.070
0.118
Optibelt Marathon 1/Marathon 2 M=S automotive V-belts – raw edge, moulded cogged, service free
AVX 10
10 x 8
4.9
8.5
AVX 13
13 x 10
5.8
11.0
146
Outside
length
La
—
Ld ≈ La – 13
Li ≈ La – 51
—
Ld ≈ La – 18
Li ≈ La – 63
Agreed between
vehicle and belt
manufacturers
0.076
0.118
Special Purpose Conveyor Belts
Product Description
Optibelt have developed a series of special purpose conveyor belts
for the economical transportation of goods in a varied range of
applications.
● Optibelt PKR endless V-belts according to DIN 2215 with patterned top surfaces
● Optibelt PKR endless V-belts according to DIN 2215 with light
coloured fabric cover and patterned top surfaces
within the standard belt height
● Optibelt KB Kraftbands with patterned top surfaces
● Optibelt PKR open ended V-belts to DIN 2216 with patterned
top surfaces
● Optibelt FK open ended conveyor belting, punched
● Optimax HF high-performance flat belts
Applications
Here are just a few examples from the wide range of applications
in which Optibelt conveyor belts are used successfully.
For transporting:
● doors, cupboard components, veneer and plastic panels in the
woodworking industry
● body parts and sharp-edged sheet metal panels in the automobile industry
● cardboard and boxes in the packaging industry
● roof tiles, concrete slabs and paviors in cement works
● tiles
Construction / Quality
Special purpose conveyor elements are used in place of expensive
conventional type conveyor belts. They run individually, or in sets
adjacent to each other, transporting goods horizontally, or up or
down inclines. Vertical conveying is also possible if the belts are
arranged top surface to top surface gripping the articles between
them.
Temperature
resistance
(°C)
Hardness
Oil
Marking
(Shore A) resistance
SBR-NR/
light coloured – 40 to + 70 ≈ 55/65*
CR/black
● parcels
● bowling alley balls
In addition to conveyor applications, these belts are also used for:
● labelling and closing tins, bottles and jars in the preserves
industry
Table 71
Design/
Colour
● sheet glass
– 25 to + 100
≈ 65
no
no
limited
yes
CR/black is supplied as standard. We would be pleased to supply
details of other designs.
SBR = styrene butadiene rubber
NR = natural rubber
CR = chloroprene rubber
* = 55 for surface over the standard height
* = 65 for surface within the standard height
● lifting, topping and sorting beet, potatoes, lettuce, cauliflower
and sprouts and many other vegetables
Because of their single belt characteristics and high permissible
surface loading, Optibelt KB Kraftbands are especially suitable in
conveyor systems and lifting platforms for:
● transporting cargo containers
● loading and unloading aeroplanes and railway wagons
● stowing and discharging ships cargoes
Optibelt KB with top surface
Properties
Special surfaced belts are used in place of expensive conventional
type conveyor belts. They run individually, or in sets arranged
adjacent to each other, transporting goods horizontally, or up or
down inclines. Vertical conveying is also possible if the belts are
arranged top surface to top surface gripping the articles between
them.
147
Special Purpose Conveyor Belts
Design Guidelines
Drive and Guide Pulleys
The drive and guide pulleys should be V-grooved pulleys. The
minimum diameters should be selected in accordance with the
standard recommendations for V-belts and Kraftbands. See the
chapter on V-pulleys.
Due to the relatively low transporting speed (experience shows that
it is usually less than 1 m/s) and the resulting low flex rate, pulley
diameters can be reduced to approx. 10% below the recommended minimum. With greater reduction, there is the danger that the
top surface separates from the base V-belt.
The driver pulley should be arranged at the discharge end of the
conveyor so that the goods are pulled along.
The diameter and the number of support rollers required depends
upon the length of the conveying span and the weight and size of
the goods to be transported.
Support tracks, generally made of plastic, are either flat or with a
key seat to improve guidance of the conveyor belt. Like it is the case
with the support rollers, the grooves must be of an adequate width.
Adjustment of the drive centre distance allowances
The tables on pages 76 and 77 show the drive centre distance
allowances applicable to special purpose conveyor belts and
Kraftbands.
Support Rollers / Tracks
Options for Tensioning
In most cases, support rollers or tracks are
required to prevent the belt from sagging
under load.
An adequate belt tension is essential to the reliable
operation of the conveyor system. Tension is applied by
adjusting the drive centre distance or, when the centres
are fixed, by the use of tension idlers.
Support rollers may be flat faced or V-pulleys.
The dimensions of the pulley grooves should
be such that the conveyor belt is supported at
its base in the groove ground, and can only
run with one edge along the pulley, and as a
consequence does not become trapped in the
groove.
When idlers are employed, they should be arranged
inside the belt if possible, as otherwise the alternating
flexing of the belt will reduce its service life.
optibelt KB Kraftbands with patterned top surface
PKR 2
Height of surface
.
Pitch
PKR 3
Temperature
resistance
(°C)
Hardness
(Shore A)
Oil
resistance
Marking
SBR-NR/light
- 40 to + 70
≈ 55
no
no
CR/black
- 25 to + 100
≈ 65
limited
yes
Groove
width
(mm)
Pattern
Standard
(mm)
maximal
(mm)
(mm)
PKR 0
3
5
—
—
PKR 1
3
5
10
—
PKR 2
3
5
—
—
PKR 3
5
—
—
3.7
Design/Colour
SBR = styrene butadiene rubber
NR = natural rubber
CR = chloroprene rubber
Table 75
Section
3V/9J
5V/15J
8V/25J
SPB
Cross-sectional dimensions Kraftband height
of the base belt
without top surface
(mm)
(mm)
Length
designation
500 ≤ 1 400
500 ≤ 3 550
1 000 ≤ 4 750
—
9x 8
15 x 13
25 x 23
16.3 x 13
9.9
15.1
25.5
15.6
A/HA
13 x 8
9.9
—
B/HB
C/HC
17 x 11
22 x 14
13.0
16.2
—
—
La = outside length; Li = inside length; Ld = datum length.
148
Length
(mm)
1 400
1 400
2 540
2 400
1 400
2 850
1 400
2 286
≤
≤
≤
≤
≤
≤
≤
≤
3 556 La
9 017 La
12 065 La
6 000 Ld
5 000 Li
8 000 Li
7 100 Li
7 100 Li
Max.
production length
(mm)
PKR 0
PKR 1
PKR 2
PKR 3
4 250
10 000
15 000
6 000
8 000
on request
10 000
12 000
●
●
●
●
●
—
●
●
●
●
●
●
●
—
●
●
●
●
●
●
●
—
●
●
—
—
—
—
—
●
—
—
Pattern type
Range: see page 29/30. Minimum order quantity on request.
Special Purpose Conveyor Belts
optibelt PKR Endless V-Belts with Patterned Top Surface
PKR 0
PKR 1
PKR 2
Table 76
PKR 5
Table 77
Pattern
Pitch
(mm)
Groove
width
(mm)
5
–
–
5
10
–
3
5
–
–
5
–
13
–
Height of top surface
Standard
(mm)
maximal
(mm)
PKR 0
3
PKR 1
3
PKR 2
PKR 5
Temperature
resistance
(° C)
Hardness
(Shore A)
Oil
resistance
Marking
- 40 to + 70
- 25 to + 100
≈ 55/65*
≈ 65
no
limited
no
yes
Design/Colour
SBR-NR/light
CR/black
SBR = styrene butadiene rubber
NR = natural rubber
* ≈ 55 for top surface above the standard height
CR = chloroprene rubber
* ≈ 65 for top surface within the standard height
Table 78
Table 79
Top surfaces 3 or 5 mm
within the standard height
Top surfaces above the standard height
StanSection dard
height
(mm)
Minimun order quantities for V-belts
patterned top surfaces
PKR 0; PKR 1; PKR 2; PKR 5
Pattern type
Standard
inside length
(mm)
PKR 0
PKR 1 PKR 2 PKR 5
for standard- for intermediate
range
length
(as listed
(sizes not listed
on pages
in this technical
23 to 26)
manual)
Top surface within the standard height
Pattern type
Standard
inside length
(mm)
PKR 0
PKR 2
Minimum
quantitiy
8.0 1 200 ≤
50001)
●
●
●
—
18 pcs.
31 pcs.
3 550 ≤10 0001)
●
●
10
B/17 11.0
1 200 ≤
2 001 ≤
2 0001)
7 1001)
●
●
●
●
●
●
—
—
15 pcs.
15 pcs.
50 pcs.
42 pcs.
2 850 ≤21 0001)
●
●
10
12.5
1 850 ≤
2 001 ≤
2 0002
8 0002)
●
●
●
●
●
●
—
—
13 pcs.
13 pcs.
21 pcs.
36 pcs.
3 550 ≤21 0001)
●
●
8
C/22 14.0
1 850 ≤ 2 0002)
2 001 ≤ 10 0002)
●
●
●
●
●
●
—
—
12 pcs.
12 pcs.
57 pcs.
48 pcs.
3 550 ≤21 0001)
●
●
8
16.0
1 850 ≤ 2 0002)
2 001 ≤ 10 0002)
●
●
●
●
●
●
—
—
11 pcs.
11 pcs.
51 pcs.
42 pcs.
2 850 ≤21 0001)
●
●
8
2 850 ≤ 12 5002
D/32 20.0 2 850 ≤ 12 5002)
●
—
●
—
●
—
—
●3)
9 pcs.
8 pcs.
22 pcs.
8 pcs.
2 850 ≤21 0001)
●
●
6
—
—
—
—
on request
on request
4 000 ≤21 0001)
●
●
5
A/13
20
25
E/40 25.0
—
1) Maximum production length on request.
3) Only available in CR/black.
2) Maximum production length 21000 mm.
Section Z/10 on request.
When ordering, please state the overall height of the V-belt including top surface.
This is indicated by the section designation as follows.
Section B/17 – top surface within the standard height
Section B/17 – with additional 3 mm top surface
Section B/17 – with additional 5 mm top surface
= 17 x 11
= 17 x 14
= 17 x 16
149
Special Purpose Conveyor Belts
optimat PKR Open Ended V-Belting according to DIN 2216
with Patterned Top Surfaces
PKR 0
PKR 1
PKR 2
Table 80
Section
PKR 0
CR/red brown
PKR 0
SBR-NR/light coloured
PKR 1
PKR 2
S
P
S
P
S
P
S
P
Z/10
●
●
—
—
—
—
—
—
A/13
●
●
●
●
●
●
●
●
B/17
●
●
●
●
●
●
●
●
C/22
●
●
●
●
●
●
●
●
25
●
●
●
●
●
●
●
●
D/32
●
●
●
●
●
●
—
—
S = Standard; P = Polyester
Table 81
Table 82
Pattern types
PKR 0
PKR 1
A/13;
B/17;
C/22
Pitch
Top surface height
Standard
( mm)
Max.
(mm)
(mm)
2
3
–
3
3
10
Hardness
(Shore A)
Oil
resistance
Marking
CR/red brown
- 25 to + 100
≈ 50
limited
no
SBR-NR/light
coloured
- 40 to + 70
≈ 45
no
no
PKR 0
PKR 1 and PKR 2
PKR 1
25; D/32
5
5
10
PKR 2
3
–
–
150
Temperature
resistance
(° C)
Design/
Colour
NR/red brown
- 40 to + 70
≈ 48
no
no
SBR-NR/light
coloured
- 40 to + 70
≈ 45
no
no
CR/red brown
- 25 to + 100
≈ 50
limited
no
CR/black
- 25 to + 100
≈ 68
limited
yes
Special Purpose Conveyor Belts
optibelt RR Plastic round section belting
optibelt KK Plastic V-belting
Section
Width x Height
(mm)
8
Z/10
A/13
B/17
C/22
8x 5
10 x 6
13 x 8
17 x 11
22 x 14
Length
of roll
(m)
Diameter
50
50
50
50
25
Optibelt RR round-section belting and Optibelt KK plastic V-belting are
especially suited as transporting elements in the food industry, in ceramic
industry plants, an for applications requiring oils and chemicals.
They can also be used as drive elements for specific ranges of capacity.
Optibelt supplies different qualities that can be easily distinguished due to their
different colours.
(mm)
Length
of roll
(m)
Weight
(≈ kg/m)
2
3
4
5
6
7
8
10
12
15
200
200
200
200
100
100
100
100
50
50
0.004
0.009
0.016
0.024
0.035
0.048
0.064
0.096
0.132
0.211
Minimum lengths for endless connection:
Round-Section belting:
V-belting:
Section Z/10 to A/13:
Section B/17:
Section C/22:
200
300
500
700
mm
mm
mm
mm
optibelt KK plastic V-belting with profile surface (white, 92 Shore A)
Plastic V-belting with pointed roof profile
Supergrip
Linatex
HV 2-Laminate
Form 1
Form 2
Section
Width x
Hight
(mm)
Length
of roll
(m)
Form
Section
Length
of roll
(m)
8
Z/10
A/13
B/17
C/22
8x 5
10 x 6
13 x 8
17 x 11
22 x 14
50
50
50
50
25
1
2
1
2
1
2
A/13
A/13
B/17
B/17
C/22
C/22
25
25
25
25
25
25
151
Table of Standards
Federal Republic of Germany
DIN
DIN
DIN
DIN
DIN
DIN
DIN
DIN
109 Sheet 1
109 Sheet 2
111
111 Sheet 2
2211 Sheet 1
2211 Sheet 2
2211 Sheet 3
2215
–
–
–
–
–
–
–
–
DIN
DIN
DIN
DIN
2216
–
2217 Sheet 1 –
2217 Sheet 2 –
2218
–
DIN 7716
–
DIN 7719 Part 1
–
DIN 7719 Part 2
–
DIN 7721 Part 1
DIN 7721 Part 2
–
–
DIN 7722
–
DIN 7753 Part 1
–
DIN 7753 Part 2
–
DIN 7753 Part 3
–
DIN 7753 Part 4
–
DIN 7867
DIN/ISO 5210
DIN/ISO 5294
DIN/ISO 5296
–
–
–
–
Drive elements, circumferential speeds
Drive elements, drive centre distances for V-belt drives
Flat belts; dimensions, nominal torque
Flat belts - specification for electrical machines
V-belts; dimensions; material
V-belts; testing the grooves
Wedge belts; specification for electrical machines
Endless V-belts, classical sections; minimum pulley datum
diameters, inside and datum belt lengths
Open ended V-belting; dimensions
V-belt pulleys for classical sections; dimensions, material
V-belt pulleys for classical sections; groove checking
Endless V-belts, classical sections for industrial engineering
applications; drive design, power ratings
Natural and synthetic rubber products; storage, cleaning and
maintenance requirements
Endless variable speed belts for industrial speed changers;
belts and groove sections of the corresponding pulleys
Endless variable speed belts for industrial speed changers;
measuring the shaft centre distance fluctuation
Synchronous belt drives, metric pitch; timing belts
Synchronous belt drives, metric pitch; tooth profile for synchronous pulleys
Endless hexagonal belts for agricultural machinery and
groove sections of the corresponding pulleys
Endless wedge belts for industrial engineering applications;
dimensions
Endless wedge belts for industrial engineering applications;
drive design and power ratings
Endless wedge belts for automotive engineering applications;
dimensions
Endless wedge belts for automotive engineering applications;
fatigue testing
Ribbed belts and pulleys
Joined wedge belts; sections 9J; 15J; 20J; 25J
Timing belt drives; pulleys
Timing belt drives; belts
ISO International Organisation for Standardisation
ISO
ISO
ISO
ISO
ISO
ISO
ISO
22
63
99
100
155
254
255
–
–
–
–
–
–
–
ISO 1081
ISO 1604
–
–
ISO
ISO
ISO
ISO
1813
2230
2790
3410
–
–
–
–
ISO 4183
ISO 4184
ISO 5256
–
–
–
ISO 5287
ISO 5288
ISO 5289
–
–
–
ISO 5290
–
ISO 5291
152
–
The widths of flat belts and corresponding pulleys
Flat belt drives; lengths
Diameter of pulleys for flat belts
Crown height of pulleys for flat belts
Drive pulleys; limits for setting drive centre distances
Type, quality and balancing of pulleys
Pulleys for classical V-belts and wedge belts; geometrical
groove checking
Drives with V-belts and grooved pulleys; terminology
Endless variable speed belts and pulleys for industrial engineering applications
Endless V-belts; electrical conductivity
See DIN 7716
Wedge belt drives for the automotive industry; dimensions
Endless variable speed belts and pulleys for agricultural
applications
Grooved pulleys for classical V-belts and wedge belts
Classical V-belts and wedge belts; lengths
Synchronous belt drive; belt tooth pitch coding
Part 1 MXL; XL; L; H; XH; XXH
Part 2 MXL; XXL metric sizes
Wedge belt drives for the automotive industry; fatigue testing
Timing belt drives; definitions
Endless double section belts and pulleys for agricultural
applications
Joined wedge belt pulleys;
groove sections 9J; 15J; 20J; 25J;
Joined classical V-belt pulleys;
groove sections AJ; BJ; CJ; DJ
ISO 5292
ISO 9982
– Industrial V-belt drives; calculating ratings and drive centre
distances
– Synchronous belt drives; pulleys
– Timing belts; calculating ratings and drive centre distances
– Synchronous belt drives; belts
– Dynamic testing for determining the effective area with V-belts
– Dynamic testing for determining the effective area with ribbed
belts
– Joined wedge belt drives, lengths in the datum system
– Synchronous belt drives - belts for the automotive industry
– Synchronous belt drives - pulleys for the automotive industry
– Anti-static endless timing belts; electrical conductivity; characteristics and test methods
– Belt drives; V-belt pulleys; checking the geometry of the pulley
grooves
– Belt drives - pulleys and ribbed belts for the automotive
industry; section PK
– Belt drives - pulleys and ribbed belts for industrial applications;
geometric data PH, PJ, PK, PL and PM
– See DIN 7867
Australia
– Employs the same Standards as the United Kingdom
ISO
ISO
ISO
ISO
ISO
5294
5295
5296
8370-1
8370-2
ISO/DIS 8419
ISO/CD 9010
ISO/CD 9011
ISO 9563
ISO 9980
ISO 9981
ISO 9982
Austria
ÖNORM M 6504 –
ÖNORM M 6506 –
ÖNORM M 6516 –
ÖNORM M 6516 –
Appendix
ÖNORM DIN 2215
V-belt pulleys for classical V-belts, groove sections, material
Wedge belt pulleys; groove sections, material
V-belt drives; calculation, selection diagram
V-belt drives; calculation
–
Endless V-belts; dimensions
Belgium
NBN E 24-001
NBN E 24-002
NBN E 24-003
NBN E 24-004
NBN E 24-005
NBN E 24-006
NBN E 24-007
NBN E 24-009
NBN E 24-010
NBN E 24-011
– V-belt and pulley drives; terminology and explanations
– Endless V-belts with classical sections; electrical conductivity
– Endless V-belts with classical sections and V-belt pulleys for
industrial applications
– Endless wedge belts and V-belt pulleys for industrial applications
– Endless variable speed belts and pulleys for industrial applications
– Endless wedge belts and pulleys for the automotive industry
– Endless flat belts and pulleys
– Endless variable speed belts and pulleys for agricultural
applications
– Double section belts and pulleys for agricultural applications
– V-belt pulleys for banded belts with wedge belts
Countries of the former USSR
GOST 1284-57
GOST 5813-64
– Endless classical section V-belts; V-belt pulleys
– Endless V-belts and pulleys for automotive engines, tractors
and agricultural machinery
Denmark
DS/ISO 254
DS 2104
DS 2106
DS 2107
DS 2108
DS/ISO 5287
DS/ISO 5289
DS/ISO 5294
DS/ISO 5296
– Type, quality and balancing of pulleys
– V-belt pulleys for classical and wedge belts; checking the
grooves
– V-belt pulleys; material, quality, balancing
– V-belt pulleys for classical sections; pulley types
– V-belt drives; allowances for drive centre adjustment
– Wedge belt drives for the automotive industry; fatigue testing
– Endless double section belts and pulleys for agricultural
machinery applications
– Synchronous belt drives; pulleys
– Synchronous belt drives; belts
Finland
SFS 2491
SFS 2492
SFS 2493
– Endless classical section V-belts; sizes, lengths
– Endless classical section V-belts; cross section checking
– Endless classical section V-belts; drive calculation
Table of Standards
SFS
SFS
SFS
SFS
SFS
SFS
SFS
SFS
2494
2495
2496
3523
3524
3525
3526
3527
–
–
–
–
–
–
–
–
Classical section belt pulleys; sizes, diameters
Classical section belt pulleys; checking the grooves
V-belt pulleys; material, balancing
Endless wedge belts, V-belt pulleys and terminology
Endless wedge belts; sizes, lengths
Endless wedge belts; length measurement
Wedge belt pulleys; sizes, diameters
Endless wedge belts; drive calculation
France
NF E 24-002 ISO 254
NF E 24-209 ISO 255
NF E 24-211 ISO4183
NF E 24-212 ISO4184
NF E 24-213
NF E 24-220/ISO5290
NF E 24-232/ISO1604
NF E 24-301/ISO5296
NF E 24-302/ISO5294
NF E 24-402/ISO9982
NF T 47-104
NF T 47-123
– Type, quality and balancing of belt pulleys
– Pulleys for classical V-belts and wedge belts; geometrical checking of the grooves
– Grooved pulleys for classical V-belts and wedge belts
– Classical V-belts and wedge belts; lengths
– V-belt drives - classical V-belts and wedge belts; crosssection checking
– Joined wedge belt pulleys; groove sections 9J; 15J; 25J
– Endless variable speed belts and pulleys for industrial
applications
– Synchronous belt drives; belts
– Synchronous belt drives; pulleys
– Belt drives; pulleys and ribbed belts for industrial
applications; geometrical data PH; PJ; PK; PL and PM
– Endless V-belts, electrical conductivity, sections Y; Z; A;
B; C; D; E; SPZ; SPA; SPB; SPC
– Drives with V-belts and grooved pulleys; terminology
United Kingdom
BS 3733
BS 3790
BS AU 150
– Endless classical section V-belts for agricultural applications
– Drives with endless wedge belts and V-belts
– Endless wedge belts for the automotive industry
Spain
UNE
UNE
UNE
UNE
UNE
UNE
UNE
UNE
UNE
18006
18007
18009
18077
18086
18102
18107
18108
18117
–
–
–
–
–
–
–
–
–
Classical V-belts; dimensions
Flat belts and pulleys; dimensions
Pulleys for classical V-belts; dimensions
Flat belt pulleys; dimensions
Classical V-belts, cross section checking
Drive pulleys
V-belts; technology
V-belts for classical sections; groove checking
V-belt pulleys; production, machining
–
–
–
–
–
–
–
–
–
–
–
–
–
Endless flat belts and pulleys; dimensions
V-belt pulleys; types; balancing
Endless classical section V-belts; drive calculation
Endless classical section V-belts; dimensions, lengths
Endless classical section V-belts; ratings
Endless classical section V-belts; cross section checking
Endless classical section V-belts; length measurement
Classical section V-belt pulleys; dimensions
Classical section V-belt pulleys; diameters, drive ratios
Classical section V-belt pulleys; checking the grooves
V-belt pulleys, sizing
V-belts and V-belt pulleys; terminology
Endless wedge belts; sections SPZ; SPB; SPC; cross sections,
lengths
Endless wedge belts; sections SPZ; SPB; SPC; length measurement
Wedge belt pulleys; sections SPZ; SPB; SPC; dimensions
Endless variable speed belts for industrial applications; sections, lengths
Endless variable speed belts for industrial applications; length
and section measurement
V-belt pulleys for endless variable speed belts for industrial
applications
Sweden
SMS
SMS
SMS
SMS
SMS
SMS
SMS
SMS
SMS
SMS
SMS
SMS
SMS
979
2475
2476
2477
2479-2485
2489
2490
2491
2492
2493
2494
2500
2516
SMS 2517
–
SMS 2518
SMS 2565
–
–
SMS 2566
–
SMS 2567
–
Israel
S.I. 429
– Endless V-belts for motor vehicles
Switzerland
VSM 15425
Italy
UNI 5265
UNI 5266
UNI 7509
– Classical section endless V-belts; cross-section dimensions
– Classical section V-belt pulleys
– Classical section endless V-belts; electrical conductivity
Japan
JASO E 105/106
JASO E 107/108
JIS B 1854
JIS B 1855
JIS K 6323
–
–
–
–
–
Timing belts and pulleys for the automotive industry
V-belts and pulleys for the automotive industry
V-belt pulleys for classical V-belts
V-belt pulleys for wedge belts
Endless classical section V-belts
Netherlands
NEN 1725
NEN 1727
– Endless wedge belts and corresponding pulleys; dimensions for sections SPZ; SPA and SPB
– Endless V-belts and corresponding pulleys; dimensions
for sections Y; Z; Z; B; C; D; E
In addition the ISO Standards apply.
Poland
PN-66 M 85201
– Classical section endless V-belts; V-belt pulleys
VSM 15426
– Belt pulleys for classical sections and wedge belts; groove
sections, diameters
– Endless classical V-belts and endless wedge belts; sections
and belt lengths
USA
RMA/MPTA IP-20
RMA/MPTA IP-21
RMA/MPTA IP-22
RMA/MPTA IP-23
RMA/MPTA IP-24
RMA/MPTA IP-25
RMA/MPTA IP-26
ASAE S 211. …
SAE J636b
–
–
–
–
–
–
–
–
–
Classical Multiple V-Belts (A; B; C; D and E Cross Sections)
Double (Hexagonal) Belts (AA; BB; CC; DD Cross Sections)
Narrow Multiple V-belts (3V; 5V; and 8V Cross Sections)
Light Duty V-Belts (2L; 3L; 4L and 5L Cross-Sections)
Synchronous Belts (MXL; XL; L; H; XH and XXH Belt Sections)
Variable Speed V-Belts (12 Cross-Sections)
V-Ribbed Belts (PH; PJ; PL and PM Cross-Sections)
V-Belt Drives for Agricultural Machines
V-Belts and Pulleys for Automotive Applications
–
–
–
–
–
–
–
Classical endless V-belts
Classical endless V-belts; length measurement
Classical endless V-belts; cross section measurement
Endless V-belts; types
Endless wedge belts; lengths
Endless wedge belts; sections
Endless wedge belts; cross section measurement
Yugoslavia
JUS
JUS
JUS
JUS
JUS
JUS
JUS
G.
G.
G.
G.
G.
G.
G.
E2.053
E2.054
E2.055
E2.057
E2.063
E2.064
E2.065
153
Data Sheet
for Calculation/Check of Drive
.
.
Company
Optibelt GmbH
Corveyer Allee 15
37671 Höxter/Germany
Tel. +49 (0 )52 71/ 62 -0
Fax +49 (0 )52 71/ 6 22 00
info@optibelt.com
www.optibelt.com
(stamp)
Fitted with:
For test
New drive
For initial production
Existing drive
For series production
Usage __________ belts/year
Number
Prime Mover
Type
Size of starting torque
__________________________
Type
________________________
Start:
loaded
unloaded
Nature of load::
constant
pulsating
(e.g. MA = 1.8 MN)
(e.g. star delta)
(e.g. lathe, compressor) _______________________________________
_______________________________
Operational hours per day _______________________________ hours
Number of starts _____________
per hour
per day
Rational reverses ____________
per minute
per hour
Power:
Manufacturer
Driven Machine
(e.g. electric motor, diesel engine 3 cyl.)
Method of starting
Size
P normal _______________________________________ kW
shock
Rating:
P normal _________________________________ kW
P maximal ______________________________________ kW
P maximal _______________________________ kW
or maximum torque ______________ Nm bei n1 ___________ r.p.m.
or maximum torque ______________ Nm bei n2 ___________ r.p.m.
Speed n1 _____________________________________________ r.p.m.
Speed
Position of shafts:
horizontal
n2 ____________________________________ r.p.m.
n2 min __________________________________ r.p.m.
vertical
<) _____________________ °
n2 max _________________________________ r.p.m.
Maximum allowable shaft loading Sa max _______________________________ N
Maximum allowable shaft loading Sa max _______________ Newton
Datum or outside diameter of pulley:
Datum or outside diameter of pulley:
angled
dd1
_______________ mm
da1
dd2
________________ mm
_______________ mm
da2
________________ mm
dd1 min _______________ mm
da1 min ________________ mm
dd2 min _______________ mm
da2 min ________________ mm
dd1 max _______________ mm
da1 max ________________ mm
dd2 max _______________ mm
da2 max ________________ mm
Pulley face width b2 max ___________________________________ mm
Speed ratio
i
__________________
Centre distance
a _______________ mm
Tension/guide pulleys:
Pulley face width b2 max ___________________________________ mm
imin
___________
imax __________________
amin
________ mm
amax _____________ mm
inside
in drive slack side
outside
in drive tight side
movable
dd
mm
V-Pulley
da
mm
Flat pulley
Operating Conditions: Ambient temperature
(e.g. spring loaded)
fixed
________________________________ °C minimum
________________________________ °C maximum
Exposure to oil
(e.g. oil mist, droplets)
___________________________
water
(e.g. spray)
acid
(type, concentration, temperature) ____________________
__________________________________
dust
dust (type) _______________________________________________
Special conditions: Where the drive is subjected to unusual conditions (e.g. inside or outside idler
pulleys, three or multi-pulley drives, as well as drives with reverse rotational
direction, sketches are required. Please use the back of this data sheet for sketches.
154
Drive description:
155
Data Sheet
for Calculating/Checking Conveyor Systems
.
.
Company
Optibelt GmbH
Corveyer Allee 15
37671 Höxter/Germany
Tel. +49 (0 )52 71/ 62 -0
Fax +49 (0 )52 71/ 6 22 00
info@optibelt.com
www.optibelt.com
(stamp)
For one off use
New drive
For series production
Existing drive
Fitted with:
Number
Section length
Top surface Manufacturer
Usage __________ belts/year
Prime Mover
Type
(e.g. geared motor)
________________________________________
Size of starting torque
Method of starting
(e.g. MA = 1.8 MN)
(e.g. star delta)
________________________
_______________________________
Start
Power:
V-pulleys
Flat pulleys
plain
ball
Number ______________________________________________ pieces
dd ____________________ mm
da _____________________ mm
under load
Spacing t _____________________________________________ pieces
unloaded
Support rails
Operational hours per day _______________________________ hours
Number of starts _____________
Supporting pulleys
Bearings
per hour
Material
V-grooved
flat
(e.g. steel. plastic)
______________________________________
per day
P normal _______________________________________ kW
P maximum _____________________________________ kW
Material to be conveyed
or maximum torque ______________ Nm at n1 _____________ r.p.m.
Type
Rotational speed n1 ____________________________________ r.p.m.
Condition of the corners
round
Conditions of the contact surface
rough
(e.g. concrete slabs)
________________________________________
Rotational speed n2 ____________________________________ r.p.m.
Conveying speed
min __________________________ m/min
sharp
max __________________________ m/min
Continuously variable
yes
smooth
Conveyed
horizontally
no
Maximum allowable shaft loading Sa max _______________ Newton
Datum or autside diameter of the driver pulley:
dd1
_______________ mm
da1
vertically
<) ____________________ °
inclined
downwards
upwards
Dimensions l x w x h (mm) _________ x __________ x __________
________________ mm
dd1 min _______________ mm
da1 min ________________ mm
dd1 max _______________ mm
da1 max ________________ mm
Motion
continuous
cycled
collected
Datum or outside diameter of the guide pulleys:
_______________ mm
da2
________________ mm
dd2 min _______________ mm
da2 min ________________ mm
dd2 max _______________ mm
da2 max ________________ mm
Exposure to oil
(e.g. oil mist, droplets)
______________________
water
(e.g. spray)
Speed ratio i ______________ imin _____________ imax ___________
acid
(type, concentration, temperature) _______________
Position of shafts:
dust
(type)
horizontal
angled
vertical
<) _____________________ °
Overall width of the system _______________________________ mm
Drive centre distance a ______ mm
Allowance for tensioning –
In the open air
____________________________
________________________________
yes
no
amin _____ mm amax ____ mm
mm __________ + mm
Tension/guide pulleys:
inside
outside
dd ______________________ mm
156
Operating Conditions
da _____________________ mm
The space overleaf is provided for sketches of the drive arrangement.
Please include the dimensions of all the pulleys and idlers used in the
proposed design
© Arntz Optibelt Gruppe 414227/0401
dd2
Notes on the proposed conveyor arrangement:
No part of this publication may be reproduced without the prior permission of the publishers.
Copyright infringement will be prosecuted. Errors excepted.
The Optibelt offer is aimed exclusively at specialist distributors. Optibelt recommends that its products be used exclusively according to the instructions in the Optibelt
documentations. Optibelt will not be held responsible it the products are used in any application for which it was not designed or manufactured. Optibelt would also like to point
out its General Terms of Business.
157
optibelt RED POWER II
High performance wedge belts to
BS 3790, DIN 7753 Part 1 and
RMA/MPTA - service free
optibelt SUPER TX M=S
Moulded cogged raw edge belts
to BS 3790 and DIN 7753 Part 1
optibelt VB
Classical belts to BS 3790
and DIN 2215
optibelt MARATHON 1
Automotive fan belts – raw edge,
moulded cogged, maintenance free
optibelt MARATHON 2 M=S
Automotive fan belts – raw edge, moulded
cogged, maintenance free, heavy duty,
may be used in sets without restrictions
optibelt KB
Kraftbands
optibelt KB RED POWER II
Kraftbands
optibelt PKR
Endless V-belts with patterned top surface
DIN 2215
optibelt SUPER VX
Variable speed belts –
moulded cogged raw edge
optibelt DK
Double section V-belts DIN 7722
optibelt ZR/HTD®/ZRK
Timing belts
optibelt OMEGA
Timing belts
optibelt ZRM/ZRP/ZRL/
Optiflex
Polyurethane timing belts and open
ended timing belting
optibelt RB/RBK
Ribbed belts
optimax HF
Endless flat belts
optimat OE
Open ended V-belting, punched
DIN 2216
optibelt LB
Link belting
optibelt RR
Round plastic belting
optibelt KK
Plastic V-belting
optibelt KS
V-grooved pulleys
optibelt ZRS
Timing belt pulleys
optichain RK/RKB/KTR
Roller chain
Chain sprockets
optibelt CE
Clamping bushes
Optibelt GmbH • P.O. Box 10 0132 • D-37669 Höxter/Germany
Telefon +49 (0)52 71 6 21 • Fax +49 (0)52 71 97 62 00 • info@optibelt.com • www.optibelt.com
© Arntz Optibelt Gruppe 414227/0501
optibelt SK
High performance wedge belts to
BS 3790, DIN 7753 Part 1 and
RMA/MPTA